Particle tracking

Phil

I am running a VOF simulation with a discrete phase. I am wanting to use the discrete phase to try and visualise better the flow paths that a single particle in the water phase would take. I have no problem displaying all of the particles for a given injection however I do not seem to be able to track a single particle track. I think I am following the steps as the Fluent manual describes however I do not get any display when i check the display single particle track, I have tried changing the Stream ID but this isnt helping. Some help would be greatly appreciated!