Can't use midiForceToKey :(

[Stelvio]

Hello,
I'm trying to use ForceToKey with Ableton Live.
What I do is I drag the plugin in my midi track, but as soon as I drag another plugin instrument, like a synth for example, it removes the ForceToKey.

Apologies for the dumb question but how are you suppose to use it along with an instrument?

Thank you for any help.

[Stelvio]

I also tried to insert ForceToKey on a midi track and a synth instrument on another track in Live,
and then I sent the midi output of Force to Key to the synth midi input... It didn't work...
Help!