playing Midi Notes infinitely

[Fearge]

Hi, I'm using your Library for a MIDI Controlled Synthesizer.
Are there any possibilities to play notes continuosly, when I press a key on my keyboard? Because right now the note stops, depending on the setLength() Method.
This makes sense to me, but from a musical Point of view I'd like to have the possibility to play notes as long as I want.
Am I overseeing some simple paramter or solution for this or do I have to implement it myself?

Thanks in advance :)
Greetings