Read More Button - HELP!

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Hello! I literally was working on a read more button this morning! I found this post very helpful https://www.wix.com/velo/forum/main/comment/5c2dcdd00522560140e02b57
If you have any issues let me know, glad to walk you through it. My version is below. This isn’t for a Multi State Box, but the idea is similar.
-Joe

$w.onReady(function () {
    $w('#dynamicDataset').onReady(function () {
 const shortTextLength = 100;
 let fullText, shortText, textField;

        $w('#repeater1').forEachItem(($w, item) => {
            fullText = $w('#dynamicDataset').getCurrentItem().about;
 if (!fullText.length) {
                $w('#button1').hide();
            } else if (fullText.length <= shortTextLength) {
                $w('#text24').text = fullText;
                $w('#button1').hide();//see more text
            } else {
                shortText = fullText.substr(0, shortTextLength) + '...';
                $w('#text24').text = shortText;
            }
        })
    });
});