Hi, Headley, thanks agin for your help.
I just tried agin opened map on ground at EHAM Schiphol There were four aircraft on ground.
i loaded x-plane and connected to IVAO then just had one aircraft in blue on ground map, looking out cockpit of sim there were at least four aircraft on ground.
i have attached pics and yes have TRFC T/LBL TCAS and O/BND ticked.
thanks
carl