I can confirm that the attached MPC does exactly what you show in your reply, and it plays back as you want.
!NoteWorthyComposerClip(2.0,Single)
|Instrument|Name:"Violin"|Patch:40|Trans:0|DynVel:10,30,45,60,75,92,108,127|Pos:-8|Wide:Y
|MPC|Controller:vol|Style:Linear Sweep|TimeRes:Quarter|SweepRes:1|Pt1:0,20|Pt2:3,127|Pos:7|Wide:Y
|Note|Dur:Half,Dotted|Pos:2
!NoteWorthyComposerClip-End