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Help using multiple media fields in a CMS powered lightbox

I’m building a lightbox for my portfolio - When I click on an image there will be either a video or another image that displays in the lightbox. As I’m using the CMS for this, I’m only able to select one media field when I’d like to be able to use my image field and my video field. Is there a work around for this while still being able to use a CMS collection? Right now you’ll see I’m only displaying images when the lightbox is open

Here is my public share link: Webflow - nudge2021