PET coincidences using vGate

Hello everyone
I am a beginner. I just started working on vgate to simulate the PET. I have trouble getting the coincidences. When i am executing the macro file. Its giving me the error for the coincidence specific commands. Can someone share the accurate set of commands that can be used to get coincidences

It may be better to ask this to the GATE Mailing List as they should be able to help directly.