TCC: How to import into offer grid udfs

Summary: We have someone new helping us with our TCC scripts. We are wanting to do an upload into offer UDFs. Is this possible and if so would you be willing to share a sample script to help get us started? It seems so simple yet we can't get any script to work to upload into offer UDFs. We upload into Req UDFs all of the time. I have searched Customer Connect and Oracle SR Knowledge documents and haven't found anything yet for a guide or tips to look into, sorry if I am just missing