GET not available in URL/Network element

My App Inventor does NOT show any GET (only GO BACK, GO FORWARD...) for the URL/Network element, so I'm not able to set the apropiate values in the fields of my Data Base (MySQL).

In every video I have wathed this option is available for the URL/Network so they can interwork.

What I'm doing wrong?

it seems to be, you are talking about the web component but are using a webviewer component?

see also the documentation http://ai2.appinventor.mit.edu/reference/components/connectivity.html#Web