HI. I made a little pd for changing in real time some midi data from a controller when you press a special key, like a SHIFT function. My problem is that I need to recall the shifted/unshifted controller position to resume the controller when it reaches again that position, like the "pick up" function in Ableton Live. The idea is to control more than one virtual controller with just one real controller.
I have it all working for just one real midi controller (I mean one knob or one slider sending midi controller values). I used "gate" and "sel" commands. I'm trying now to replicate the functionality with n real controllers.
In other words, now I'm just recalling one controller position value for any controller but not from which controller is that value. I need it to work multithreading, because the operator may wish to move multiple controllers shifted and unshifted, and every shifted/unshifted position must be stored somewhere for the pick up functionality.

Is this too much for PD? I think the algorithm in C and it's not that hard using hashmaps or something similar to store controllerID+controllerValue and check if it has a pick up value active.
Could you give me some directions using PD? Can I store and recall key+value in any way?

thanks,
Federico