How do I make the Description of Wix Pro Gallery Uppercase?

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Hi friends,

I have a Wix Pro Gallery on my site, connected to a Dataset that has fields for the Title, Description, Photo, and Text for a Link to Lightbox.

Currently, I’m using the following code:

import wixData from 'wix-data';
import wixWindow from 'wix-window';

$w.onReady( function() {
    $w("#Cast").onReady( () => {
        $w("#CastGallery").onItemReady( ($item, itemData, index) => {
        $item("#CastGallery").text = itemData.role.toUpperCase();
        })
    })
})

And what I’m attempting to do is force the description of the Wix Pro Gallery to be uppercase with no success.

Also, I’d like to use a text field with the title of a lightbox to connect to the lightbox itself for the links of the Title, Description & Photo — as we commonly do for repeaters. For that, I’m using the following code:

import wixData from 'wix-data';
import wixWindow from 'wix-window';

$w.onReady(function () {
        wixData.query("Cast")
            .find()
            .then((results) => {
                $w(`#CastGallery`).data = results.items;
            })
            .catch((err) => {
                let errorMsg = err;
            });
            
        $w(`#CastGallery`).onItemReady(($w, itemData) => {
            console.log(itemData);
            $w(`#CastGallery`).label = itemData.name;
            $w(`#CastGallery`).onClick((event)=>{
                wixWindow.openLightbox(itemData.lightbox);  
            });
            $w(`#CastGallery`).onClick((event)=>{
                wixWindow.openLightbox(itemData.lightbox);  
            });
        });
});

The link to my website is:
https://www.regularsmusical.com/cast-workshop

Can anyone help! Thanks in advance.

Warmly,
Miss Hazel