getting Unable to parse expression;no formula entered

[Varjawand]

getting Unable to parse expression;no formula entered when trying to define place call parameters.
Its a simple function to send a call.

error attached not sure what i am missing here

[piyush aghera]

Hello.. Its been very long since I worked on UCCX. However, I think you'll need to enter value in Dialog Groups. Please refer this: https://developer.cisco.com/docs/contact-center-express/place-call-step/#place-call-step