Set/Unset autocoordination

I can't set the auto-corrdination ON or OFF through my C++ code. I tried using KEY_AUTOCOORD_OFF, KEY_AUTOCOORD_ON, KEY_AUTOCOORD_SET, KEY_AUTOCOORD_TOGGLE, but none works.I tried the same events in XML, which don't work either.I saw several posts about this, some people say the ON and OFF events work, but not for me...Like other people said, it works fine if FSUIPC is installed. Otherwise, no success.Does anyone know how to make this work without FSUIPC?Thanks,Eric