How do I use functions instead of "else if"

[cooldma]

I am trying to make a system of rewards for killing wither skeletons and it makes the server lag due to the "else if"s, I want to use functions and someone told me to use:

function checkChance(chance: number, number: number) :: boolean:
  return true if {_chance} <= {_number} else false

My code:

on script load:
    set {-coin} to sunflower of unbreaking 10 named "&6&lCoin"
    
on death:
    if attacker is a player:
        if victim is a wither skeleton:
            clear drops
            set {-chance} to a random integer between 1 and 100
            if {-chance} is less than or equal to 60:
                drop 1 netherite block at victim
                send "&7You got 1 netherite block" to attacker
            else if {-chance} <= 89:
                drop 3 of {-coin} at victim
                send "&6You got 3 coins" to attacker
            else if {-chance} <= 95:
                drop 8 of {-coin} at victim
                send "&6You got 8 coins" to attacker
            else if {-chance} <= 99:
                drop 10 of {-coin} at victim
                send "&6You got 10 coins" to attacker
            else if {-chance} <= 100:
                drop 32 of {-coin} at victim
                send "&6&lJackPot! (32 coins)" to attacker

If anyone could help it would be greatly appreciated.

 

[Minecoll_YT]

I'm 100% sure that this isn't making your server lagging. And use local variables

 

[cooldma]

I'm 100% sure that this isn't making your server lagging. And use local variables

Would it work on a non minehut server that would get 50+ player?