[MusoBob]

Thanks, so something like this ?

-- Function for opening a URL
function OpenURL(url)
  reaper.CF_ShellExecute(url)
end

retval_url, input_url  = reaper.GetUserInputs("Type url", 1, "Enter url >", "http://www.")
            
            
if retval_url then
    url = input_url
    OpenURL(url)

end