[Watsyn] How to play waveform created?

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Hi,

Using Watsyn in LMMS, I can draw a waveform. When I press a key on the keyboard, the sound works but does not match the modified waveform.
How do I play the waveform created?

Thanks
Watsyn has 4 oscillators. If you've only changed one of them you may not notice much difference in the sound unless you turn all the others off or at least down.

Steve