Hello Community,
I'm trying to achieve the following -> Link to similar issue
My automation rule looks like:


Everything works like a charm, but the issue comes when one of our users modifies one of the fields Carrier 1 or Carrier 1 TicketID for the second/third/etc. time, the Summary will get duplicated...
This is how it looks if one of our users append for the second or third time the value issue.Carrier 1 Ticket ID:

I see that I can use the substringBefore(), but I really do not understand how should I use it.
My issue it's really the same as the linked one on the top of this question.
If somebody would be kind enough to explain a little like for newbies, I would really appreciate.
Thanks,
MikeSierra