Thank you very much for the direction!! Major help.
I deleted my previous replies as I re-re-read your reply and think I got it now. How does it measure for code standards?
However when used in a new block, same error but the coding looks the same except the sprite referenced is different (was Sprite - used on the board, now BuildOption_Sprite - used in the menu). Only the BuildOption_Sprite selected changes, the others disappear.
Black square where oil derrick should be (SlotID=1, animation=1)
If the function/parameter will help, I'm all for it but will need a little push in the right direction.