B4J Question b4j there is no web element in selenium

when i want to control some element by findElementByXpath i have no option for control this
no method , no library , no event
i checked all examples from this topic : https://www.b4x.com/android/forum/t...omation-create-any-robot-with-browser.104344/ but i couldn't solve problem.
what should i do for control?