Spacebar doesn't start playback with Plugin GUI open in Play mode

Hello, when I’m in Playmode i would like to edit the parameters of an instrument and listen to it while the GUI is opened, but the space bar won’t start Dorico.
Every time, i need to close the instrument window to ear the changes I’ve made.
Any suggestions
thank you
BP

Unfortunately, when a VST plug-in is in focus, the Dorico application itself is likewise not in focus (because plug-ins and their windows are managed by a separate application, Dorico’s VST audio engine), and it cannot receive any keypresses. You have to switch back to the Dorico application for these shortcuts to be operable.

Thank you for your quick response!

BP