diff --git a/platypush/backend/http/webapp/src/components/Action/ActionsList.vue b/platypush/backend/http/webapp/src/components/Action/ActionsList.vue
index faa20209b2..46ee92081a 100644
--- a/platypush/backend/http/webapp/src/components/Action/ActionsList.vue
+++ b/platypush/backend/http/webapp/src/components/Action/ActionsList.vue
@@ -31,6 +31,12 @@
                    :dragging="isDragging"
                    v-else-if="loops[index]" />
 
+        <SetVariablesTile v-bind="componentsData[index].props"
+                          v-on="componentsData[index].on"
+                          :collapsed="collapsedBlocks[index]"
+                          :dragging="isDragging"
+                          v-else-if="sets[index]" />
+
         <BreakTile :active="isDragging"
                    :readOnly="readOnly"
                    :spacerTop="componentsData[index].props.spacerTop"
@@ -101,6 +107,10 @@
         <div class="row item action add-continue-container" v-if="visibleAddButtons.continue">
           <AddTile icon="fas fa-rotate" title="Add Continue" @click="addContinue" />
         </div>
+
+        <div class="row item action add-set-container" v-if="visibleAddButtons.set">
+          <AddTile icon="fas fa-square-root-variable" title="Set Variables" @click="addSet" />
+        </div>
       </div>
     </div>
   </div>
@@ -117,6 +127,7 @@ import ListItem from "./ListItem"
 import LoopBlock from "./LoopBlock"
 import Mixin from "./Mixin"
 import ReturnTile from "./ReturnTile"
+import SetVariablesTile from "./SetVariablesTile"
 import Utils from "@/Utils"
 
 export default {
@@ -146,6 +157,7 @@ export default {
     ListItem,
     LoopBlock,
     ReturnTile,
+    SetVariablesTile,
   },
 
   props: {
@@ -280,6 +292,10 @@ export default {
           data.props.type = 'while'
         }
 
+        if (this.isSet(action)) {
+          data.props.value = action.set
+        }
+
         return data
       })
     },
@@ -365,6 +381,16 @@ export default {
       }, {})
     },
 
+    sets() {
+      return this.newValue?.reduce?.((acc, action, index) => {
+        if (this.isSet(action)) {
+          acc[index] = action
+        }
+
+        return acc
+      }, {}) || {}
+    },
+
     hasChanges() {
       return this.newStringValue !== this.stringValue
     },
@@ -463,9 +489,10 @@ export default {
           this.fors[index] ||
           this.whiles[index] ||
           this.isAction(action) ||
-          this.isReturn(action) ||
           this.isBreak(action) ||
-          this.isContinue(action)
+          this.isContinue(action) ||
+          this.isReturn(action) ||
+          this.isSet(action)
         ) {
           acc[index] = action
         }
@@ -481,6 +508,7 @@ export default {
         condition: this.allowAddButtons,
         for: this.allowAddButtons,
         while: this.allowAddButtons,
+        set: this.allowAddButtons,
         else: (
           this.allowAddButtons &&
           this.parent &&
@@ -562,7 +590,7 @@ export default {
         return
       }
 
-      event.stopPropagation()
+      event.stopPropagation?.()
       this.$emit('dragenter', index)
     },
 
@@ -571,7 +599,7 @@ export default {
         return
       }
 
-      event.stopPropagation()
+      event.stopPropagation?.()
       this.$emit('dragleave', index)
     },
 
@@ -584,7 +612,7 @@ export default {
         return
       }
 
-      event.stopPropagation()
+      event.stopPropagation?.()
       let dropIndices = []
 
       if (!event.detail?.length) {
@@ -673,7 +701,7 @@ export default {
         // otherwise the event will be caught by the parent element. If the parent
         // is a modal, then the modal will be closed, making it impossible to edit
         // text fields in the action tiles.
-        event.stopPropagation()
+        event.stopPropagation?.()
         return
       }
 
@@ -713,6 +741,11 @@ export default {
       this.newValue.push('continue')
     },
 
+    addSet() {
+      this.newValue.push({ 'set': {} })
+      this.selectLastExprEditor()
+    },
+
     addReturn() {
       this.newValue.push({ 'return': null })
       this.selectLastExprEditor()
diff --git a/platypush/backend/http/webapp/src/components/Action/LoopEditor.vue b/platypush/backend/http/webapp/src/components/Action/LoopEditor.vue
index d54803a7de..6eb60b7f0c 100644
--- a/platypush/backend/http/webapp/src/components/Action/LoopEditor.vue
+++ b/platypush/backend/http/webapp/src/components/Action/LoopEditor.vue
@@ -29,6 +29,7 @@
       <input class="checkbox"
              type="checkbox"
              name="async"
+             ref="async"
              :checked="async"
              @input.stop="onInput('async', $event)" />&nbsp;
         Run in parallel
@@ -76,11 +77,12 @@ export default {
     onSubmit() {
       const iterator = this.$refs.iterator.value.trim()
       const iterable = this.$refs.iterable.value.trim()
+      const async_ = this.$refs.async.checked
       if (!iterator.length || !iterable.length) {
         return
       }
 
-      this.$emit('change', { iterator, iterable })
+      this.$emit('change', { iterator, iterable, async: async_ })
     },
 
     onInput(target, event) {
diff --git a/platypush/backend/http/webapp/src/components/Action/LoopTile.vue b/platypush/backend/http/webapp/src/components/Action/LoopTile.vue
index a2799f798d..81a2b2416a 100644
--- a/platypush/backend/http/webapp/src/components/Action/LoopTile.vue
+++ b/platypush/backend/http/webapp/src/components/Action/LoopTile.vue
@@ -18,8 +18,7 @@
           <i class="fas fa-arrow-rotate-left" />
         </span>
         <span class="name" v-if="type === 'for'">
-          <span class="keyword">for<span v-if="async">k</span></span>&nbsp;
-          <span class="code" v-text="iterator" />
+          <span class="keyword">for<span v-if="async">k</span></span> <span class="code" v-text="iterator" />
           <span class="keyword"> in </span> [
           <span class="code" v-text="iterable" /> ]
         </span>
diff --git a/platypush/backend/http/webapp/src/components/Action/Mixin.vue b/platypush/backend/http/webapp/src/components/Action/Mixin.vue
index 5bf4230b4f..2bba46f167 100644
--- a/platypush/backend/http/webapp/src/components/Action/Mixin.vue
+++ b/platypush/backend/http/webapp/src/components/Action/Mixin.vue
@@ -67,6 +67,10 @@ export default {
 
       return this.getKey(value) === 'return'
     },
+
+    isSet(value) {
+      return this.getKey(value) === 'set'
+    },
   },
 }
 </script>
diff --git a/platypush/backend/http/webapp/src/components/Action/SetVariablesTile.vue b/platypush/backend/http/webapp/src/components/Action/SetVariablesTile.vue
new file mode 100644
index 0000000000..f8d8a15416
--- /dev/null
+++ b/platypush/backend/http/webapp/src/components/Action/SetVariablesTile.vue
@@ -0,0 +1,361 @@
+<template>
+  <ListItem class="set-variables-tile"
+            :class="{active}"
+            :value="value"
+            :active="active"
+            :read-only="readOnly"
+            :spacer-bottom="spacerBottom"
+            :spacer-top="spacerTop"
+            v-on="dragListeners"
+            @input="$emit('input', $event)">
+    <Tile v-bind="tileConf.props"
+          v-on="tileConf.on"
+          :draggable="!readOnly"
+          @click.stop="showEditor = true">
+      <div class="tile-name">
+        <span class="icon">
+          <i class="fas fa-square-root-variable" />
+        </span>
+        <span class="name">
+          <div class="keyword">set</div>
+        </span>
+      </div>
+
+      <div class="variables">
+        <div class="variable" v-for="(value, name) in value" :key="name">
+          <span class="code name" v-text="name" />&nbsp;=
+          <span class="code value" v-text="value" />
+        </div>
+      </div>
+    </Tile>
+
+    <div class="editor-container" v-if="showEditor && !readOnly">
+      <Modal title="Set Variables"
+             :visible="true"
+             @close="showEditor = false">
+        <form class="editor" @submit.prevent="onChange">
+          <div class="variable" v-for="(v, i) in newValue" :key="i">
+            <span class="name">
+              <input type="text"
+                     placeholder="Variable Name"
+                     @blur="onBlur(i)"
+                     @input.prevent.stop
+                     v-model="newValue[i][0]">&nbsp;=
+            </span>
+            <span class="value">
+              <input type="text"
+                     placeholder="Value"
+                     @input.prevent.stop
+                     v-model="newValue[i][1]">
+            </span>
+          </div>
+
+          <div class="variable">
+            <span class="name">
+              <input type="text"
+                     placeholder="Variable Name"
+                     ref="newVarName"
+                     @input.prevent.stop
+                     v-model="newVariable.name">&nbsp;=
+            </span>
+            <span class="value">
+              <input type="text"
+                     placeholder="Value"
+                     ref="newVarValue"
+                     @blur="onBlur(null)"
+                     @input.prevent.stop
+                     v-model="newVariable.value">
+            </span>
+          </div>
+
+          <div class="buttons">
+            <button type="submit" class="btn btn-primary">
+              Save
+            </button>
+          </div>
+        </form>
+      </Modal>
+    </div>
+  </ListItem>
+</template>
+
+<script>
+import ListItem from "./ListItem"
+import Modal from "@/components/Modal"
+import Tile from "@/components/elements/Tile"
+
+export default {
+  emits: [
+    'click',
+    'delete',
+    'drag',
+    'dragend',
+    'dragenter',
+    'dragleave',
+    'dragover',
+    'drop',
+    'input',
+  ],
+
+  components: {
+    ListItem,
+    Modal,
+    Tile,
+  },
+
+  props: {
+    active: {
+      type: Boolean,
+      default: false,
+    },
+
+    readOnly: {
+      type: Boolean,
+      default: false,
+    },
+
+    spacerBottom: {
+      type: Boolean,
+      default: true,
+    },
+
+    spacerTop: {
+      type: Boolean,
+      default: true,
+    },
+
+    value: {
+      type: Object,
+      default: () => ({}),
+    },
+  },
+
+  computed: {
+    dragListeners() {
+      return this.readOnly ? {} : {
+          drag: this.onDragStart,
+          dragend: this.onDragEnd,
+          dragenter: (event) => this.$emit('dragenter', event),
+          dragleave: (event) => this.$emit('dragleave', event),
+          dragover: (event) => this.$emit('dragover', event),
+          drop: this.onDrop,
+      }
+    },
+
+    tileConf() {
+      return {
+        props: {
+          value: this.value,
+          class: 'keyword',
+          readOnly: this.readOnly,
+          withDelete: !this.readOnly,
+        },
+
+        on: {
+          ...this.dragListeners,
+          delete: () => this.$emit('delete'),
+          input: this.onInput,
+        },
+      }
+    },
+  },
+
+  data() {
+    return {
+      dragging: false,
+      newValue: [],
+      newVariable: {
+        name: '',
+        value: '',
+      },
+      showEditor: false,
+    }
+  },
+
+  methods: {
+    onChange() {
+      this.showEditor = false
+      if (this.readOnly) {
+        return
+      }
+
+      const variables = this.newValue
+      if (this.newVariable.name?.trim?.()?.length) {
+        variables.push([this.newVariable.name, this.newVariable.value])
+      }
+
+      const args = variables.map(([name, value]) => {
+          name = this.sanitizeName(name)
+          try {
+            value = JSON.parse(value)
+          } catch (e) {
+            value = value?.trim()
+          }
+
+          return [name, value]
+        })
+        .reduce((acc, [name, value]) => {
+          if (!name?.length) {
+            return acc
+          }
+
+          acc[name] = value
+          return acc
+        }, {})
+
+      if (!Object.keys(args).length) {
+        return
+      }
+
+      this.onInput(args)
+    },
+
+    onInput(value) {
+      if (!value || this.readOnly) {
+        return
+      }
+
+      this.$emit('input', {set: value})
+    },
+
+    onBlur(index) {
+      if (this.readOnly) {
+        return
+      }
+
+      if (index != null) {
+        const name = this.sanitizeName(this.newValue[index][0])
+        if (!name?.length) {
+          this.newValue.splice(index, 1)
+        } else {
+          this.newValue[index][0] = name
+        }
+      } else {
+        const name = this.sanitizeName(this.newVariable.name)
+        const value = this.newVariable.value
+
+        if (name?.length) {
+          this.newValue.push([name, value])
+          this.newVariable = {
+            name: '',
+            value: '',
+          }
+
+          this.$nextTick(() => {
+            this.$refs.newVarName?.focus()
+          })
+        }
+      }
+    },
+
+    onDragStart(event) {
+      if (this.readOnly) {
+        return
+      }
+
+      this.dragging = true
+      this.$emit('drag', event)
+    },
+
+    onDragEnd(event) {
+      this.dragging = false
+      this.$emit('dragend', event)
+    },
+
+    onDrop(event) {
+      this.dragging = false
+      if (this.readOnly) {
+        return
+      }
+
+      this.$emit('drop', event)
+    },
+
+    sanitizeName(name) {
+      return name?.trim()?.replace(/[^\w_]/g, '_')
+    },
+
+    syncValue() {
+      this.newValue = Object.entries(this.value)
+    },
+  },
+
+  watch: {
+    showEditor(value) {
+      if (!value) {
+        this.newVariable = {
+          name: '',
+          value: '',
+        }
+      } else {
+        this.$nextTick(() => {
+          this.$refs.newVarName?.focus()
+        })
+      }
+    },
+
+    value: {
+      immediate: true,
+      handler() {
+        this.syncValue()
+      },
+    },
+  },
+
+  mounted() {
+    this.syncValue()
+    this.$nextTick(() => {
+      this.$refs.newVarName?.focus()
+    })
+  },
+}
+</script>
+
+<style lang="scss" scoped>
+@import "common";
+
+.set-variables-tile {
+  &.active {
+    .spacer {
+      display: none;
+    }
+  }
+
+  .variables {
+    margin-left: 2.5em;
+  }
+
+  .variable {
+    .value {
+      font-style: italic;
+    }
+  }
+
+  .drag-spacer {
+    height: 0;
+  }
+
+  .editor {
+    display: flex;
+    flex-direction: column;
+    padding: 1em;
+
+    .variable {
+      display: flex;
+
+      .value {
+        flex: 1;
+
+        input[type="text"] {
+          width: 100%;
+        }
+      }
+      
+    }
+
+    .buttons {
+      margin: 1em;
+    }
+  }
+}
+</style>