Aftertouch vibrato on keyboard is not working with Garritans ARIA

[Wally Mayo]

Sorry if I'm asking an old question.

Pressing key harder (aftertouch) yields vibrato when using ARIA straight as a player. Using plugin (VST) in Cakewalk, everything seems to work except there is just no vibrato with the same key pressure (for exact same instrument). I've Googled and can't find an answer. (Using Personal Orchstra 5 - Trumpet).  What am I missing?

Edited June 24, 2020 by Wally Mayo

[John Bradley]

Preferences | MIDI | Playback and Recording - make sure "Channel Aftertouch" is ticked . 

[Wally Mayo]

My goodness. So simple. Thanks!!