I am trying to design a residential window dynamic block that grows in width when either grip is dragged. I trying to use the "Linear Stretch Pair" parameter set but i can't seem to get the right combination of selection set and objects. I have the parmeter set to midpoint so the grips move out simultaneously but the objects (in this case they are simple lines that correspond to a double hung window) do not follow. Are there any suggestions out there for i might be missing?
