Trying to configure a Delete from Data Store Entities smart service

Hi all,

Has anyone used the Delete from Data Store Entities smart service and can point me what I am missing in my configuration?

I have a process variable - pv!requestData.  The datatype is a CDT that maps to a database table.  In my process, I am trying to pass pv!requestData to the Delete from Data Store Entities smart service to delete that specific row.

In my Delete from Data Store Entities smart service setup, the topmost node says - Data to Delete * (EntityDataIdentifiers) I am assuming this should be my primary key? So for this parameter, I entered  pv!requestData.id. This is because I am thinking  id is the identifier of the row to be deleted.

However, in the node where I am to define my Data Source, when I select the requestData data type, it gets automatically removed from the Entity Value in the dialogue box as soon as I move away from that parameter in the dialogue box.

I have looked at the documentation for Delete from Data Store Entities smart service but no step by step instructions are offered.

Thank you.