function bw:blocks/vegetation/tall_grass/z
execute if score #bw_cdbs bw_calc matches 1 run function bw:blocks/vegetation/tall_grass/set
execute if score #bw_cdbs bw_calc matches 1 if score @s bw_calc matches 2.. if score #bw_max bw_calc matches 1.. if block ~ ~ ~1 #bw:gothrough positioned ~ ~ ~1 run function bw:blocks/vegetation/tall_grass/zdir