payment for VR

Hello, I am interested in using the unreal engine platform for architectural purpose: use the interation with datasmith to import from revit and then make changes to be able to visualise the model in virtual reality. I would like to know how is the payment in this case, how do I need to pay unreal engine?

From what I understand: you’d be covered under section 5.3

So I do not need to pay the royalty?

So I do not need to pay for royalty?

If you’re creating vr walkthroughs to show to clients there is no royalty owed.