Toolbar button using {file$} only processes 1st file

I created a new button shown below:

Button

that processes the following files:

Files

but it only processes the first file "23041F8C.tsk". I thought using {file$} would run the command once
for each passed file?

It would run the command once for each selected file.

What then happens is up to the command.

There could also be an issue if the command never exits and holds up any further ones being run. You can use @async: before that line to tell Opus not to wait, but that can also mean several commands all running at once.

Thanks Leo. I will have to do more digging because I have used this before and it always worked.