diff --git a/src/engine/runtime.js b/src/engine/runtime.js
index 1f720c8b44..609c473f8a 100644
--- a/src/engine/runtime.js
+++ b/src/engine/runtime.js
@@ -599,6 +599,17 @@ class Runtime extends EventEmitter {
             volume: 1
         };
 
+        /**
+         * A temporary storage area that gets cleared when the project starts or stops
+         */
+        this.temporaryStorage = {};
+        this.on(Runtime.PROJECT_START, () => {
+            this.temporaryStorage = {};
+        });
+        this.on(Runtime.PROJECT_STOP_ALL, () => {
+            this.temporaryStorage = {};
+        });
+
         /**
          * Export some internal values for extensions.
          */