Anybody made use of Quartz Composer?

Has anyone made use of Quartz Composer graphics in a Xojo app?

I think a few of our plugin users use it with the QCViewMBS class.

Great. Now icing on the cake: I’m not seeing an opacity property. Do you know of a way I might fade-up a QCViewMBS, meaning animating it from fully transparent to fully opaque?

alphaValue property maybe?