Function doesn't return value on hover

This is my entire page of javascript. I’m using the editor’s GUI to connect the submit button to the page. I’m not using the insert() function. Do I need to do that in order for this to work? If so, why? Thanks!

import wixLocation from ‘wix-location’;

$w.onReady( function () {
//TODO: write your page related code here…

let url = wixLocation.url;

$w(“#input5”).value= url;

let ID;
$w(“#button30”).onMouseIn( (event, $w) => {
//Add your code for this event here:
$w(“#text89”).text=“no”;
ID = $w(“#text89”).text;
});

$w(“#input10”).value = ID;

});