Ofxpd can't modify freeverb


I have a lot of problems to change value of parameters of freeverb from ofxpd.
Here is a sample code of what I did.

quadratBombo[i].reverbQuadratBlau = ofMap(y, quadratBombo[i].y + quadratBombo[i].width, quadratBombo[i].y,0,2);
            sonsMaster.pd.sendFloat("reverbQuadratBlau", quadratBombo[i].reverbQuadratBlau);

I did the same process for the delay and it works like a charm. The volume works fine too, but the freeverb doesn’t.

Here is the PureData patch:

Anyone knows how to solve it??

thank you