NPC Code 'isheavy' not working

[Animebryan]

My new custom Block NPCs aren't affected by the NPC Code isheavy. Does it really do anything or was this disabled in an update?

[deice]

inside the lua code, the isheavy attribute should be listed before the closing curly brace. in any case i don't think 1.3 donut blocks are affected by isheavy, just the smbx2 ones (though i could be wrong, i don't have the means to test it right now)