You probably want to use an XPATH expression in a keyword from a library, like for example SeleniumLibrary. The IDE, or Editor you use is not relevant for the problem, unless it is the Application/Software Under Test (AUT or SUT).
You must be sure that you can find the XPATH expression in some tool, like Developer Tools in Chrome. Then to get some help from anyone, you can prepare a small HTML code block, and the XPATH expression you are trying to use.