You all should just learn CSS Selectors,a web page is styled on CSS Selectors,not Xpath or anything else you dont need to know javascript,just the document.querySelector("") place the copied selector,in the quotation, document.querySelector("#email") then add in the attribute you want to change, document.querySelector("#email").value="hello@example.com" If you want to scrape an attribute,just use eval
navigate("http://www.facebook.com","Wait")
wait for browser event("Everything Loaded","")
run javascript("document.querySelector(\"#email\").value = \"hello their\"")
set(#username,$eval