From Vectorworks Developer
.VectorScript|VectorScript ..VS:Function Reference|Function Reference ..VS:Function_Reference_Appendix|Appendix
DescriptionSets the matrix of the plane for a planar object. If there is already a plane in the document with that matrix, the object will be set to be in that plane. Otherwise a new plane will be added to the document.
rotationZAngle :REAL) : BOOLEAN;
def vs.SetEntityMatrix(objectHandle, offset, rotationXAngle, rotationYAngle, rotationZAngle): return BOOLEAN
objectHandle HANDLE The object whose plane is being set. offset REAL The X, Y and Z offsets of the plane in current document units. rotationXAngle REAL The rotation of the plane about the X-axis in degrees. rotationYAngle REAL The rotation of the plane about the Y-axis in degrees. rotationZAngle REAL The rotation of the plane about the Z-axis in degrees.