identify process with random name

[JackMac4]

I'm having difficulty trapping and waiting on a program that I'm calling, primarily because it spawns a lot of sub processes. I've isolated the main thread that get's spun, but it always has a random number attached to the end. The process is called _is##.exe, with ## being replaced by a seemingly random number.

$PID = Run("Z:\SAUCE\setup.exe")    
    Do
        $list = ProcessList()
        For $i = 1 to $list[0][0]
            If StringTrimLeft($list[$i][0],3) = "_is" Then
                $PID = $list[$i][1]
                ExitLoop
                MsgBox(0,$PID,$list[$i][0])
            EndIf
        Next    
        Sleep(250)
    Until ProcessExists($PID) = 0

Is there a better way to do this - because this way isn't working. Thanks in advance!

[JackMac4]

Use StringLeft, and not StringTrimLeft.

Thanks for catching that glaring oversight on my part - I'd still be interested in a better method of catching this PID if anyone has any ideas.

[jchd]

Thanks for catching that glaring oversight on my part - I'd still be interested in a better method of catching this PID if anyone has any ideas.

Maybe you can further qualify what pattern the ###... part should match.

Does this work for you?

StringRegExp($ProcName, '(?i)_is\d{3}\.exe')