delete data store entity

I need to delete a specific record in data store entity. i am getting the primary key id value in a text field named ID from an Interface how to map the value received from an interface to the data to delete field in Delete data store entity node in process model.

I configured the node as below:

Data to delete---={entity: cons!CONSTANT_POINTER_TO_DATA_STORE_ENTITY, identifiers: pv!primarykey_field}

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