How do I make an arrow explode if it lands and the player has a custom enchant?

right now I have this:
explode.mcfunction
summon creeper ~ ~ ~ {Fuse:0, ignited:true, ExplosionRadius:10}
kill @s 
tick.mcfunction
execute as @e[type=arrow,nbt={inGround:1b}] at @s run function pack:explode
and the custom enchant is just
{
    "description": "Explode",
    "supported_items": "minecraft:bow",
    "exclusive_set": "minecraft:infinity",
    "slots": ["mainhand"],
    "weight": 100,
    "anvil_cost": 0,
    "min_cost": {
        "base": 1,
        "per_level_above_first": 0
    },
    "max_cost": {
        "base": 10,
        "per_level_above_first": 0
    },
    "max_level": 1
}