How to fetch values for the Contract Terms User Defined varibles useing PL/SQL procedure ? Attached

Hello Gurus,

I am trying to define clause having User Defined variables i like to fetch value executing the PL/SQL procedures. I have a simple procedure stored in the database and used it in defining a user defined variable which has been used in a clause. This clause is added to a section in a contract template. Now when i add this template to a sourcing RFQ and try to Validate it, getting the below problem reported: Unresolved Internal Variable and the Suggestion: Enter variable value

Please advise.

Rgds,

Abhisek Roy