ObjectCurrentVertexY is intended for use with points and polyline objects. If the object being evaluated does not intersect the cell or element being evaluated, ObjectCurrentVertexY returns zero. If one of the vertices of an object is in the element or cell, ObjectCurrentVertexY returns the Y coordinate of that vertex. Otherwise, ObjectCurrentVertexY returns the Y coordinate of the first place where the object intersects the cell or element. For objects drawn on the front view of the model, ObjectCurrentVertexY returns zero.