Sampler Track in Cubase 9

Is there some kind of restriction when one can use “solo” mode in audiowarp? I have this section from long acapella. Now if i turn it to “music” it works and trigger from my keyboard, all good but when i turn on “solo” then no sound. Envelopes is being triggeres, i can see dot moving on them and all but no sound is coming out of the sampler track? just great as i need “solo” ie. better quality audiowarp for acapella…