if(%brick.getdatablock().getname()!$="brick16x16fData" && ..more bricks.. && %brick.getdatablock().getname()!$="brick64x64fData")
%brick.getDatablock().category !$= "Baseplates" should do it.If not, dump a bricks data-block, or check the code file of one to find the proper name of the category field.Nvm, that is it.