For Cimbalom, the Dynamics slider works as it would normally except for two patches, Warp and Performance.
Warp
The Dynamics slider controls a low pass filter in this preset. With the slider at 100%, the filter is fully opened and at 0% is completely closed.
Performance
When using the Performance patch, the Dynamics slider changes between the note type being played. At 0%, regular notes can be played, while anything above 0% will introduce tremolo notes which become longer as the slider is increased.