SFZ definition file - Trigger Loop Midi On

I am using the SFZ player to play single shot samples triggered by a midi note on. However I would like to use it to play loops sync'ed to my host liveprofessor by using a midi note on to start and a midi note on again to stop it. I've tried the following but I have to depress and hold the key for it to loop. Has anybody an idea whether this can be achieved? The release parameters work but fade too quickly. Any help would be appreciated. Would it work in Dimension Pro? Thanks Chris ///////////////////////////////////////////////////////////////////////////// /// sfz definition file /// copyright rgc:audio 2004 /// ------------------------------------------------------------------------- /// Play sample on Note On 36 and loop sample=FJ\Forget You Congas Loop.wav pitch_keycenter=36 lokey=36 hikey=36 lochan=1 hichan=2 //loopstart=0 loopend=181417 loopmode=loop_continuous trigger=attack loopmode=loop_continuous ampeg_release=100 ampeg_vel2release=100 ///on_locc48= on_hiccN=48///