I have a custom field in the users module called "Agent Commission" which is a number field but is the agent's commission % so we just write 75 meaning 75% and I have another custom field in "Deals" called "Projected Agent Commission"

I' m trying to call the Agent Commission field in the users field to write a custom script to multiply the 
"Agent Commission" by the deal price to display the "Projected Commission" amount in the Deals module.

So far I have this:

//retrieves the deal

DealRecord = zoho.crm.getRecordById("Deals",DealID); 

//below retrieves the net commission field from the deal module

NetCommmsion = DealRecord.get("Total_Net_Commission_To_Office");

//below retrieves the deal record owner id

DealOwnerID = DealRecord.get("Owner").get("id");

//below retrieves the user record

AgentRecord = zoho.crm.getRecordbyId("users",DealOwnerID);

After the last step I'm unable to extract the custom field for "Agent Commission"