How do I can get the url through the Browser

can i get an url through the Browser expression with "url"?

Yes.

how to do that?

thanks

You practically answered your own question already. Use the expression Browser.URL. For example, Text object -> Set Text : Browser.URL

i mean how i cant get the url from the chrome browser in a different tab

if my app is in another tab, how to make the app allways running on the background, and if i visit a webstite, how to tell to the app in the background, to allways, in the text object to get the url adress???

Oooh. I don't think it's possible for a site to know what other tabs you have open. That'd be a hell of a security issue.