You could be missing a dependency. Could you try installing the Server commands from Package Manager and looking for the OpenQA.Selenium library again?

Also, note that you can use the OBAppInstance variable declared in the Selenium Create Browser command to call selenium driver scripts. You'd need to use the Set Variable command to set the OBAppInstance variable to a driver variable, like ChromeDriver.

For example: vDriver = vAppInstance.Value

I have installed the OpenQA.selenium.Winium and OpenQA.selenium.Chrome.ChromeDriver, When I'm trying to setup the 'Selenium Get Element(s)', In the Output variable, Default Type "OpenQA.Selenium.IWebElement" not found in Moreoptions?

The issue could be related with the script itself, since DOM may not be returning a value.

To get an element by Tag Name, you could use the Selenium Get Element(s) command. For the Search Parameter value only select the Tag Name field and indicate "LI" as the value. In Element Search Option field set the value to "Find Elements" if you want to retrieve a list of IWebElements. Else, the "Find Element" option will only return the top most element.

Note: In order to be able to create the IWebElement variable to hold the output, you'll need to import the OpenQA.Selenium library.

I'm trying to execute this DOM, document.getElementsByTagName("LI")

Hello!

what selenium script are you trying to call?