Playbook custom activities variables are readonly

[BigBeetle]

Does anyone know what could cause the custom playbook activities variables field to be read-only?

I created a custom playbook activity to display a simple data definition, everything else is working ok, but the variables are in read-only, does anyone know what or where to troubleshoot?

[BigBeetle]

Just found the answer myself, The Action button (Action Assignment), need to have the action for this data definition, re-use other ones, will cause the problem

[pavan820kum]

Iam also have the same kind of problem could you please tell me the process you did for your self to resolve this.

[Ankita23]

Can anyone share the process to define the Action Assignment. Using the OOB ones (Submit) are not helping for non-admins to submit the form. 

[Nick43]

I was able to get it working my using "Global Playbook Experience" in Action Assignment Map. I looked up the documentation which is very confusing