on-startup(before setup begin)
runscript("NameOfYourPowerShell.ps1");
function runscript(path)
l1="C:\\WINDOWS\\system32\\windowspowershell\\v1.0\\powershell.exe C:\\"
l2=path
file = io.open("c:\\runscript.bat","w");
file:write(l1..l2);
file:close("c:\\runscript.bat");
Shell.Execute("c:\\runscript.bat", "", "", "", SW_HIDE,true);
File.Delete("c:\\runscript.bat");
end