You are jumping to the conclusion too quickly. So, here is test code with external GUI.
Send("#r")
Sleep(1000)
$index = ControlCommand("Run", "Type", "ComboBox1", "FindString", 'C:\Windows\SysWOW64\cmd.exe')
ControlCommand("Run", "Type", "ComboBox1", "SetCurrentSelection", $index)
My search string 'C:\Windows\SysWOW64\cmd.exe' was way down in the list.