Javascript , dynamic “chips”

i am currently learning javascript and i want to make the “chips” dynamic by increasing the chips but what my code didnt work.

let player = {
    name : "Player1",
    chips : 0
}

function chips () {
    if (isAlive = true) {
        player.chips = 0
        player.chips += 50
    }
}

let playerEl = document.getElementById("player-el")
playerEl.textContent = `${player.name} :  ${player.chips} €`

Here is what i tried, if someone can help me i would appreciate it, thanks .