Hi Sue -
Please don’t double-post - https://discourse.mcneel.com/t/building-a-wall-with-bricks-by-using-a-robot/
When you don’t get an answer, a common cause is that you haven’t provided enough information for anyone to be able to provide an answer that makes sense.
You should always provide your *.gh file (reduced to only those components that illustrate the problem and all referenced Rhino geometry internalized) and explicitly indicate if any non-standard plug-ins are used. Since you mention an ABB robot, I imagine that a special plug-in is used, and, if the problem is related to that plug-in, you might need to look for help from the people that provided that plug-in.
-wim