OIC HCM Adapter Get Worker API call can't get to any "Workers" node elements using an ASSIGN actvy

Summary:

Hi.

I have created an integration that uses the OIC HCM Adapter to call the HCM REST GET workers api and it itself works and returns everything that I expect. However, the ASSIGN activity that tried to move the "person_id" from the "workers" node fails with the following error message -->

The <from> value is invalid. Xpath expression associated with <from> in copy assign activity is invalid.   There is an user error that results in missing element value(s) in the xpath query.

The "workers" node has a green color with dots on top of each element within, and shows as a "custom single elements" vs. the standard "single element" syntax for anything else.