Javascript + Discord.js: RPG levelling system message acting wierd

Question

I'm making a RPG bot for Discord, and a main part of it is the leveling system. All mathematical systems work, but the message for it (wierdly enough) doesn't. Code:

levelUpFunc = function() {
    if (level.exp >= level.lvlupreq) {
        level.lvl += 1;
        level.lvlupreq += level.lvl;
        level.lvlupreq *= 2.5;
        level.exp = 0;
        message.channel.send(`You levelled up to **level ${level.lvl}**! +5 Hp, +1 Atk, +1 Def`);
    }
};
let checkForLvlup = setInterval(() => levelUpFunc(), 500);

And the console returns:

ReferenceError: message is not defined

This is not the case with all other message.channel.send();. Please help!

Answer 1

You didn't define message in the snippet you posted. We would need to see more code to tell you where message is defined. But likely you could add message as a parameter of levelUpFunc, and then call it with levelUpFunc(message), assuming that message is defined wherever you call this function from.