hello i need to add a querystring "lang" only when it appears in the url
From : http://www.domain.com/de/Page
To : http://www.domain.com/en/Page?lang=de
the problem is that i need to continue parsing the rest of the rules below this rule
so after this transformation i need to parse
From : http://www.domain.com/de/Page?lang=de
To : http://www.domain.com/finalPage.aspx?lang=de
so basically i need to add the "lang" querystring to all urls then continue parsing the rest of the rules.
i also expect that the "lang" value is not always there - so i default to "lang=en"
thanks.