Custom Button to convert module A information to module b fields

Hello,

We have renamed our "contacts" and "accounts" modules. For the ease of explanation, let's say contacts is now "moduleA" and accounts is "moduleB".

I want to map certain fields (First Name, Last Name, Lead Status, Contact Number, etc) from moduleA to moduleB using a custom "convert" button that applies a "custom funciton".

NOTE: moduleAId is a parameter of the function chosen from the list as: moduleA id

I have the following code:

moduleAIdLong = moduleAId.toLong();

rec = zoho.crm.getRecordById("moduleA",contactedIdLong);

mp = Map();

mp.put("Pending Contract Name","Testing");

mp.put("Lead Stage",ifnull(rec.get("Lead Status"),""));

mp.put("Qualification Status",ifnull(rec.get("Qualified Status"),""));

mp.put("First Name",ifnull(rec.get("First Name"),""));

mp.put("Last Name",ifnull(rec.get("Last Name"),""));

pendingCreate = zoho.crm.createRecord("moduleB",mp);

return "Success";

However, whenever I click this button/run this code...no record is created in moduleB with the desired information. What do I need to change/add to my code to get this functionality working?