basic vector maths - how to add offset if parent is rotated?

[BIGTIMEMASTER (Aljav)]

I am trying to place a debug sphere at this vector offset location, which is child of the blue cube actor.

Adding the actors location to the vector offset only works if the actor is not rotated. Seen here:

If parent cube actor is rotated, the rotation is not accounted for, seen here:

How can I account for the parents rotation when adding back an offset?

[Probezeit]

Rotate Arround Axis Node

[pezzott1]

Try:

[BIGTIMEMASTER (Aljav)]

Here is what I tried, but I got the same result as before:

Did I understand that node correctly? I am not sure what “axis” means exactly, but I guess that it means the pivot point, therefore it should take the parents location?
But the result of this setup is such that the sphere is drawn without rotation factored in:

@pezzott1
that worked, just as you showed.

[Probezeit]

You need to put in the Up Vector of the Actor, then it should work

[BIGTIMEMASTER (Aljav)]

Ah, got it.
That works:

That gives me a little better idea how the Transform Location node must be working. Thanks