AudioProcessorValueTreeState::SliderAttachment issue

I’m a bit late to the party but I just started looking into the AudioProcessorValueTreeState stuff. I build a simple little plugin and everything works fine in Live, i.e., the slider will change the parameter’s automation level, and moving the automation level will affect the slider:

But it’s not working in Reaper?

Is there something I’m missing here? The fact that it works in Live leads me to believe that I have implemented it correctly but who knows. I’m using 5.4.3, and can make the code available if need be.

Just checking: what automation mode are you using in reaper?
(You can change it by right-clicking the envelope button in the track header, cf p361 of the reaper user guide).

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Good call. I’ll try that one I get a chance :+1:

[edit] thanks @lalala, several of them make it work, although I couldn’t find any to making it work in the way it used to, and how it works in Live.