Cant submit values to collection

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1

I’m trying to add a user that registers to my site to a custom collection that will later handle access to files etc…

Here is what I got on my custom sign up form:

import { registration } from 'backend/registrations';

$w.onReady(function () {

    $w('#registrationForm1').onWixFormSubmitted((event) => {
        console.log('trigger registration');
        registration({
            firstName: event.fields[0].fieldValue,
            lastName: event.fields[1].fieldValue,
            email: event.fields[2].fieldValue,
            numberOfDownloads: 0,
        });

         return event.fields;
    });
});

import wixData from 'wix-data';

export function registration(details) {
 try {
        wixData.insert('UserDownloads', details);
    } catch (err) {
        console.log(err);
    }
}

The issue i am having is that once the form is submitted my function to add a user to my collection does not work… And when I target the submit button and try to get the values of the input fields they are always blank…

anyone got any idea how I’m supposed to submit data from a registration form to a collection?