VBA to update email when rep name field entered issue

I have a form that contains a lot of fields, two of which are the "CSR Name" and "CSRemail". I would like the CSRemail field auto populated after the CSR Name field is entered. I wrote VBA code for this but getting an error dealing with my "The expression After Update you entered as the event property setting produced the following error: Method or data member not found." I'm not sure what I coded incorrectly Any ideas? The field names on the form are CSR_Name and CSRemail. On the CSR_Name field I have an Event Procedure to run this code After Update:

Thanks!