Form Move Sub Element Method

public void MoveSubElement(
	Reference subElementReference,
	XYZ offset
)

public void MoveSubElement(Form form)
{
    if (form.ProfileCount > 0)
    {
        int profileIndex = 0;   // get first profile
        ReferenceArray ra = form.get_CurveLoopReferencesOnProfile(profileIndex, 0);
        foreach (Reference r in ra)
        {
            ReferenceArray ra2 = form.GetControlPoints(r);
            foreach (Reference r2 in ra2)
            {
                Point vertex = document.GetElement(r2).GetGeometryObjectFromReference(r2) as Point;

                XYZ offset = new XYZ(0, 15, 0);
                form.MoveSubElement(r2, offset);
                break;  // just move the first point
            }
        }
    }
}