Tempo automation doesn't seem to do anything


I am writing a piece that is going to require a lot of flexibility in the tempo. My project is only using midi (via VEP and kontakt libraries). I have the tempo track activated,Cubase showing the tempo increasing and decreasing. In fact even the metronome changes speed if I enable the click. But the midi track just plows right along at the original tempo as if nothing is happening. Might there be something obvious I’m missing?

The track is set to Linear Time Base, but it needs to be set to Musical Timebase.

That did the trick, thanks muchly.