Search for *.txt files and File.Run

[adam2014]

Hi all,
I have some *.txt files in folder but i don't know these names exactly because these files will be created by using button.

I'd like to search each FileName.txt and install msi files using:

txt_file = File.DoesExist _SourceFolder.. "\\MyFolder\\FileName.txt")
if txt_file == true
then File.Run("MsiExec.exe", "/i \""..sWorkDir.."\\FileName.msi\"", "", SW_SHOWNORMAL, true);
end

For all FileName.txt we have exactly the same FileName.msi

But the FileName.txt will be created by checking checkboxes and we don't know how much have been checked.

So how can i determinate and run filename.msi setup files with existing filename.txt