I stumbled upon weird idea of making animation in which model of a hand picks up a wire with electric plug, and inserts it into the electric socket. Everything went well until I had to apply tags and mess around with dynamics.
My first failure was when i decided to constrain points to the electric socket and back of TV. So it would hang like real wire. Unfortunatelly Hair Tags don't work with Simulation Tags and so called "rope" (sweeped spline with a circle) started to falling down through the parquet. Changing the gravity almost worked but my rigged model (of a hand) went through the wire model like a casper ghost through the wooden doors -> and i don't know why! I've added Hair Collider so Hair Tag with Hair Tag should work, right?
Second idea: I've recived hint from someone on other (c4d based) forum, and (from what i've understood) was to make Cubes that are connected in line by CV Dynamic Connector. He sent me the project already made, but i've wanted to recreate it. And i managed to do it, but it still doesn't work with my rigged hand!