Javascript: If Statement containing functions not resolving

Hi I'm still new to javascript and I cannot understand why this if statement won't resolve

message is a variable string, take "!leve alc 35" as an example.

var leve = parseInt(message.split(' ')[2]);

var leves = function() {
  if (Number(leve) < 50) {
    [(message.split(' ')[1]).toUpperCase(),
      round5(parseInt(message.split(' ')[2]))
    ]; // Getting the lvls in question
    leves = leves.join("");
  } else {
    [(message.split(' ')[1]).toUpperCase(),
      round2(parseInt(message.split(' ')[2]))
    ]; // Getting the lvls in question
    leves = leves.join("");
  }
};

I expect this code to identify if the value at the end of the String(message) is greater than 49 (50+), and if so use the round 2 formula instead of the round 5 formula. I know its the if statement at fault as each line runs fine separately and returns my expected value. I've compared my if statement to that on W3Schools and I don't believe I'm missing anything. I placed my if statement within a function and this stopped the initial error I received on loading the script, but I'm now questioning if this is the issue?