Hello, Try this approach. 1. CustomFiles: files/particles.css files/particles.js 2. Create a json file (particles.json) in the files folder, this is the settings file, like this for example: https://github.com/VincentGarreau/particles.js/blob/master/demo/particles.json 3. UniLoginForm.Script: particlesJS.load('body', 'files/particles.json', function() { console.log('callback - particles.js config loaded'); }); 4. MainForm.Script: document.querySelector('.part