RPG LEVEL UP SYSTEM commands bedrock

Minecraft bedrock How to make a RPG LEVEL UP SYSTEM with commands
#1 execute as @a run /scoreboard players operation @s test = @s xp
#2 execute as @a run /scoreboard players operation @s test -= @s xpmax
#3 /scoreboard players add @a[scores={test=0..}] xplevel 1
#4 playsound random.toast @a[scores={test=0..}]
#5 /tellraw @a[scores={test=0..}] {"rawtext":[{"text":"§l§t^§bXP Level§t^§r§b
your XP level is now "},{"score":{"name":"*","objective":"xplevel"}}]}
#6 execute as @a[scores={test=0..}] run /scoreboard players operation @s xp -= @s xpmax
#7 execute as @a run /scoreboard players set @s xpmax 50
#8 execute as @a run /scoreboard players operation @s xpmax *= @s xplevel
#9 execute as @a run /scoreboard players add @s xpmax 100

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