@d-healey yes - i was reading your posts and threads about samplemap swapping wich sounds much better, i was anyway planing to start the project from the scratch, since i think i now understand much better how HISE works - so far it was a beginner learning process for me. Love it though - fantastic tool!
It's just that i am a musician with very little knowledge about these things and am struggling a bit with scripting and such.

thanx a lot David.

so this means that i have 150 VST's on my project -

Select the button and change parameter properties - point at your sampler in 'processorid' menu and change to -bypass in 'parameterid'.

see the pic below.
http://i64.tinypic.com/3088inc.png

hope it helps!