updateRecord isn't working

Hello - I am attempting to pull a project ID from Books and write it into a field in CRM. Please help me figure out why it isn't working - I believe I have everything correct. Thanks!

Here's the code snippet:

//Get Books Proj ID and write to AFR Project
BooksProjInfo = BooksProjResp.get("project");
BooksProjID = BooksProjInfo.get("project_id");
info BooksProjID;
BooksProjIDMP = Map();
BooksProjIDMP.put("Books_Project_ID",BooksProjID);
info BooksProjIDMP;
AFRUpdate = zoho.crm.updateRecord("AFR_Projects",AFRProjID,BooksProjIDMP);
info AFRUpdate;
info zoho.crm.getRecordById("AFR_Projects", AFRProjID);

And here are the info results:

Info

4721916000001073005
{"Books_Project_ID":"4721916000001073005"}
{"Modified_Time":"2024-02-19T10:36:35-05:00","Modified_By":{"name":"Jeremy Winstead","id":"6048455000000442001"},"Created_Time":"2024-02-19T10:36:35-05:00","id":"6048455000002555001","Created_By":{"name":"Jeremy Winstead","id":"6048455000000442001"}}
{"Account":{"name":"Disney","id":"6048455000000647078"},"Ask_For_Review":false,"Owner":{"name":"Jeremy Winstead","id":"6048455000000442001","email":"jeremy@XXXXX"},"$currency_symbol":"$","$field_states":null,"Name":"Disney - TEST PROJECT","Last_Activity_Time":"2024-02-19T10:36:35-05:00","Actual_Labor_Charge":null,"Blueprint_States":"New Project","Site_Work":false,"$state":"save","Unsubscribed_Mode":null,"$process_flow":true,"Exchange_Rate":1,"Currency":"USD","$locked_for_me":false,"id":"6048455000002555001","$approved":true,"OUT_Date":null,"$approval":{"delegate":false,"approve":false,"reject":false,"resubmit":false},"Social_Media":false,"Created_Time":"2024-02-19T10:36:35-05:00","$editable":true,"Deal":null,"Shop_Notes":null,"Project_Manager":null,"Turnaround_Time_in_Weeks":0,"IN_Date":"2024-02-19","Shop_Work":true,"Created_By":{"name":"Jeremy Winstead","id":"6048455000000442001","email":"jeremy@XXXXX"},"$zia_owner_assignment":"owner_recommendation_unavailable","Est_Shop_Hours":null,"Description":"Weooooooo Helllloooo","Exclude_From_Post_Mortem":false,"Books_Project_ID":null,"$review_process":{"approve":false,"reject":false,"resubmit":false},"Actual_Hours":null,"$canvas_id":null,"Checkbox_4":false,"Photos":null,"$review":null,"Due":"Normal Queue","Modified_Time":"2024-02-19T10:36:35-05:00","Project_Status":null,"Pickup":false,"Unsubscribed_Time":null,"Due_Date_2":null,"Includes_Upholstery":false,"$orchestration":false,"Layout":{"name":"New Project Layout","id":"6048455000002312013"},"$in_merge":false,"Accepted_Date":null,"Upholstery":false,"Locked__s":false,"Tag":[],"Delivery":false,"$approval_state":"approved"}

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