Revit Cut Command

Hi, does anyone know if there is a way to use the cut command inside revit from a RiR grasshopper script. E.g. if I wanted to cut the void familes into the walls and slabs in the snap shot:

Attempted to write the following, however my python/revit api knowledge is very basic (almost non existent!!):

Hi Julian, That method is for Families i believe.

Here is an example of the InstanceVoidCutUtils.AddInstanceVoidCut method. (5.5 KB)

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Thank you so much - that works perfectly