Waves OneKnob ignores ACT ?

Hi everyone,
 
i'm using X2 Producer with Waves OneKnob plugins and an Oxygen8 as external controller (old but mine!). I've tried to setup OneKnob for ACT automation. Although the plugin window shows the ACT learn buttonin the top right corner, it wouldn't learn anything. In fact, it doesn't show any reaction to any movement of the external controller knobs. Has anyone got a Waves oneknob plugin working that way?
 
/Duesenberg24