Since Microsoft fogot a way to open easyly the "touchscreenkeyboard" when in fullscreen programms in Windows 8, I wanted a gesture to run the "onscreenkeyboard" (because I don't know a way to call the "touchscreenkeyboard" with commands).
The path to the exe is "c:\windows\system32\osk.exe" so the scrip would be: acRunProgram("c:\\windows\\system32\\osk.exe","",0,1)
For some reason this doesn't work.
My workaround was to simply create a shortcut to osk.exe and open this shortcut: acShellExecute("open","c:\\windows\\system32\\osk.lnk","","",1)
For example autohotkey doesn't has this problem.