Send Email Function

In the old Creator (4), it was much easier to script and email. It seems more difficult now. I was trying to find a flaw in my email routine and it is much harder in C5. If I point to the line number next to the Send Email (Edit), it does nothing on click.
I tried to re-create the same making another email script, but found no "Insert Fields" like the old. When I go to </> icon, it does bring up fields, but it is still difficult to enter something on the subject line like "Project: input.Project_Name". I hope there is either a good video or some change coming down that will help in this.
Just wondering if any one else is having the same issue?