I've test it. It work! Good job!
But, because is a "but", it need some improvement:
-the catalog icon (usually a square) NOT be the same as PlanIcon which have different proportions. Explore my 2DSymbols furniture.
-the invisible object must have the individual dimensions of PlanIcon.
This script (with improvement) will help me in next version of 2DSymbols library.
Thanks!!!