diff --git a/packages/server/src/queue/PredictionQueue.ts b/packages/server/src/queue/PredictionQueue.ts
index 46092d657..2b5575712 100644
--- a/packages/server/src/queue/PredictionQueue.ts
+++ b/packages/server/src/queue/PredictionQueue.ts
@@ -77,11 +77,12 @@ export class PredictionQueue extends BaseQueue {
         }
 
         if (Object.prototype.hasOwnProperty.call(data, 'isExecuteCustomFunction')) {
+            const executeCustomFunctionData = data as any
             logger.info(`Executing Custom Function...`)
             return await executeCustomNodeFunction({
                 appDataSource: this.appDataSource,
                 componentNodes: this.componentNodes,
-                data
+                data: executeCustomFunctionData.data
             })
         }
 
diff --git a/packages/server/src/utils/executeCustomNodeFunction.ts b/packages/server/src/utils/executeCustomNodeFunction.ts
index 1695cc17c..a22a0291a 100644
--- a/packages/server/src/utils/executeCustomNodeFunction.ts
+++ b/packages/server/src/utils/executeCustomNodeFunction.ts
@@ -17,9 +17,10 @@ export const executeCustomNodeFunction = async ({
 }) => {
     try {
         const body = data
-        const functionInputVariables = Object.fromEntries(
-            [...(body?.javascriptFunction ?? '').matchAll(/\$([a-zA-Z0-9_]+)/g)].map((g) => [g[1], undefined])
-        )
+        const jsFunction = typeof body?.javascriptFunction === 'string' ? body.javascriptFunction : ''
+        const matches = jsFunction.matchAll(/\$([a-zA-Z0-9_]+)/g)
+        const matchesArray: RegExpMatchArray[] = Array.from(matches)
+        const functionInputVariables = Object.fromEntries(matchesArray.map((g) => [g[1], undefined]))
         if (functionInputVariables && Object.keys(functionInputVariables).length) {
             for (const key in functionInputVariables) {
                 if (key.includes('vars')) {