Hey Guys

Im new to this forum and also New to CNC machining. (So please forgive me if i ask Dumb questions)
I am trying to set up my 4th axis i have a rotating spindle on my machine.
I have made a simple project in mesh cam and if i run the code on the machine in offline the DRO says the A axis moves, but when i run the machine in normal operation it dose not move. is there some settings in Mach3 I'm missing? Any help much appreciated  !!!

Nick