Offset VrayScene Sequence

Hello,
we are using vrscenes to get data from houdini (crowd simulation) to maya. there is one vrscene per frame, so we are using <frame04> in the path. works quite well. Now i am planning to reuse the same crowd for different shots and would love to offset the animation.
is it possible to do it ? something simple like <frame04>+50 would be enough for this case.

cheers,
Daniel

Use the Animation Overrides?