If i wanted to check what text whas in a gui, how would i do that?

There is a "text inside textfield contain """" but that doesnt seem to do the trick. I do have an if textfield contail "drink" contain "420" then set slot to bed. The "drink" is what i called the text input in the gui maker. "420" is what i want the text to say when checking for it. and the bed is the output. But im still stuck on the part of checking itself. Please help :3