Repeater buttons.

Hello,
I got repeater on my page that contains button with some text.
How can I refer each of the repeated buttons independently?
I wan to iterate all buttons and change the inside text according to some logic.
Thanks!

$w.onReady(() => {
    $w("#repeater1").onItemReady(($item, itemData, inx) => {
        $item("#button1").label = itemData.action//or whatever data field you wanna use
    })
})

Thank you.