execute unless entity @e[type=marker,tag=e_entry] run bossbar set minecraft:goal name "Step onto the Platform"
execute unless entity @e[type=marker,tag=e_entry] run bossbar set minecraft:goal color red
execute if entity @e[type=marker,tag=e_entry] run bossbar set minecraft:goal name "Enter the Door"
execute if entity @e[type=marker,tag=e_entry] run bossbar set minecraft:goal color green

bossbar set minecraft:goal value 0
bossbar set minecraft:goal max 1