Hello again,
I´ve been trying to reconstruct the BP shown by above, but I couldn´t “read” every node. So I need help on the highlighted one on the picture below:
First: left bottom one (the yellow one, "target-----relative location). What is it and how can I place it?
Second: the variable “SET” (I can imagine it´s an “promoted” variable from the one to his left)
Third: the “track” in the timeline node: I understand that the relative movement of the doors is controlled by the vector nodes below (with +200/-200), but I then I don´t now how the track itself looks like (is it a vector track or something else and which values must it contains?).
Sorry for my simple english, I´m from germany, hope you understand me nevertheless.
I recognize further that I need to get all this basic Bp-tutorial, for better understanding of all the functions/variables etc…since the whole “programming” process is new to me 
I´m a 3d-modeller in the car industry, but love the idea of getting into the game-stuff
greets
peter