Finally i found a way, but i don’t like it.
In case somebody has the same problem:
Now i have an event dispatcher in each BP, which has to be called in a definite point of the sequence.
And then I simply call this event dispatcher from the level-blueprint instead of using the tick event. That way I can define the order, that the BPs are called.
Drawback: In every map of my game, I have to paste that code into the level blueprint.
If someone has a better idea, it is very welcome.