on the fly vex autonomus mode

Other FIRST Tech Challenge
#1

i just got the vex program module today. I’m using the code from http://www.vexlabs.com because I’m already using similar code on the FRC controller.

i would like to use rc_dig_in16 to enable and disable the autonomous mode. I’ve tried

 if(rc_dig_in16 == 1)
  {
	autonomous_mode = 1;
  }
  else if(rc_dig_in16 == 0)
  {
	autonomous_mode = 0;
  }

in both main.c and user_routines_fast.c

i think that my problem lies in the fact that autonomus is enabled differnetly on the vex controller because of the following code:

#if ENABLE_AUTONOMOUS_MODE
	txdata.user_cmd = 0x02;	   /* Tell master you want to be in auton mode. */
#endif

i bet i could get this to work if i knew the “code” for normal user mode i could do something like this:

if (rc_dig_in16 == 1)
{
	 txdata.user_cmd = 0x02;
}
else
{
	txdata.user_cmd = whatever is the user mode;
}

if anybody knows whether this will work or not, please help.

#2