Hi @Will_Tian, at the moment the “Click” attribute is restricted for security reasons, but there is a way to monitor the click, take a look at the accepted solution for that here: Google Analytics event tracking for buttons in Webflow - #8 by callmevlad
Now that post above is for Google link tracking, but the same javascript custom code to monitor the element for the click and then do something applies, you just need to trigger the “something” from the custom code put in the Footer of the site.
Does that help?