diff --git a/core/engine/src/handler/function/script.rs b/core/engine/src/handler/function/script.rs
index 6eb8acaf..25712a66 100644
--- a/core/engine/src/handler/function/script.rs
+++ b/core/engine/src/handler/function/script.rs
@@ -1,12 +1,13 @@
-use anyhow::{anyhow, Context};
 use std::fmt::Debug;
 use std::thread;
 use std::time::Duration;
 
-use crate::handler::function::vm::BASE_VM;
+use anyhow::{anyhow, Context};
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
 
+use crate::handler::function::vm::BASE_VM;
+
 #[derive(Debug, Deserialize, Serialize)]
 #[serde(rename_all = "camelCase")]
 pub struct EvaluateResponse {
@@ -90,6 +91,9 @@ impl Script {
             return Err(anyhow!(exception.to_rust_string_lossy(tc_scope)));
         };
 
-        serde_v8::from_v8(tc_scope, result).context("Failed to parse function result")
+        let result_string: String =
+            serde_v8::from_v8(tc_scope, result).context("Failed to parse function result")?;
+
+        serde_json::from_str(result_string.as_str()).context("Failed to parse function result")
     }
 }
diff --git a/core/engine/src/handler/function/scripts/internals.js b/core/engine/src/handler/function/scripts/internals.js
index 127334d0..dca79850 100644
--- a/core/engine/src/handler/function/scripts/internals.js
+++ b/core/engine/src/handler/function/scripts/internals.js
@@ -16,7 +16,7 @@ const console = {
     }
 };
 
-const main = (input) => ({
+const main = (input) => JSON.stringify({
     output: handler(input, {moment: __GLOBAL__DAYJS, dayjs: __GLOBAL__DAYJS, Big: Big, env: __GLOBAL__ENV}),
     log,
 });