I have the following code, which returns the field that triggers a changeField event. It works on a Job record type, but it doesn't work on a TimeSheet type. I am simply trying to show/hide a field based on the Customer a users chooses when adding time to a timesheet.

EXAMPLE:

 define(['N/currentRecord'], function () {        function fieldChanged(context) {        //context.fieldId returns the proper id in all cases        //getField() only works on the Job record type, returns null on Timesheet grid            var f = context.currentRecord.getField({fieldId: context.fieldId});              f.isDisplay = false;      }        return {          fieldChanged: fieldChanged      }    }  );