calculate area moment relative to given axis

Hi all,
I want to calculate the area moment of a brep relative to a given axis (the brep is not parallel to the world coordinate system). I see 3 possible solutions but I don't find the syntax in the SDK help file:
* most simple is to move and rotate the brep to the world X and Y axis (not a very nice solution)
* other solution: change the construction plane in the VB component, get the area moments and restore the cplane
* maybe there is a parameter in the areamassproperties var where you can set the axis to calculate the area moment, but I don't see it...

I would prefer solution 2 or 3 but as said, I don't find the syntax, can anyone give me some help? thanks in advance!

If it is possible in Grasshoper it would also help me, but there is no area moment command in GH...