diff --git a/src/utils/index.ts b/src/utils/index.ts
index fa76f55..2834526 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -56,7 +56,9 @@ export function formatCode(
 ) {
   return code.replace(/{{(.*?)}}/g, (match) => {
     const name = match.split(/{{|}}/).filter(Boolean)[0];
-    return JSON.stringify(args?.[name] ?? optionalParams?.[name]);
+    return JSON.stringify(
+      args?.[name] !== undefined ? args?.[name] : optionalParams?.[name],
+    );
   });
 }