I figured it out. 

I had to create a new ACL on the Requested Item table

a) "Write" ACL on sc_req_item.comments with no roles, and 

b) Then I deactivated the ACL that was already in place that had scripting in it.

To all who replied - I thank you.

Sometimes we have to talk things out for it to come to us.

Have an Awesome Day just because.

Karen