Hey, thanks for the response. I am running on windows XP, so that does not supply the answer sadly. to give a bit more detail on how it is working, the cmdlet is using the user32.dll library which has a sendmessage function contained within. The sendmessage function can do many things when interfacing with a window control (it can click buttons append to fields etc) but I cannot find documentation on how to select what it is to do or what capabilities...

I am working on automating a program whose source I don't have. I have everything working except I am struggling with sending a message to two fields. I am able to send the characters using a cmdlet created by Dr. McCaffrey, which uses sendmessage.
The problem is that this appends the characters to the end of the field. I want to make another cmdlet that clears the field first so that I may then append the characters to it but I canot...