execute if block ~ ~ ~ minecraft:mossy_stone_brick_slab[type=top] run scoreboard players set @s bw_block 536
execute if block ~ ~ ~ minecraft:mossy_stone_brick_slab[type=bottom] run scoreboard players set @s bw_block 537
execute if block ~ ~ ~ minecraft:mossy_stone_brick_slab[type=double] run scoreboard players set @s bw_block 538