Unable to use Lead doc.request_type in Notification Condition

ERPNext
1

Not able to use doc.request_type=="Request for Information" in Notification Condition.

I’m getting Illegal rule **doc.request_type=="Request for Information"** . Cannot use "format" error while trying to save.

screenshot2
screenshot21295×733 65.1 KB

This was working previously in version 12.

Current Version:
ERPNext: v13.5.2 (version-13)
Frappe Framework: v13.5.2 (version-13)