Opening files one by one

Hi,

I'm trying to write a script to open file1 from folder Z, if file1 contains '10' in it's name then run action named '10', then open file2 from folder Z, if file2 contains '20' in it's name then run action '20' and so on for multiple files.

I've been searching for hours but can't find any help regarding opening a file, running action, and THEN opening the next file. All threads just regard opening multiple files at the same time.

Any kind of help would be very much appreciated.

Regards