htaccess rewrite - not rewriting to index.php 2

Question

RewriteRule ^Interface/Base/Login.aspx?ReturnUrl=%2findex.html.var$ Interface/Base/Login.aspx [R,NC,L] 

is not working. I want it to redirect to Login.aspx so it can work this is mapping another site by doing

RewriteRule (.*) http://xx.xx.xx.xx:8880/$1 [P,L]

Rewrite file is as follows:

RewriteEngine On
RewriteBase /
RewriteRule ^Interface/Base/Login.aspx?ReturnUrl=%2findex.html.var$ Interface/Base/Login.aspx [R,NC,L]
RewriteRule (.*) http://xx.xx.xx.xx:8880/$1 [P,L]

IP is hidden for protection.

Answer 1

You can't match query string in RewriteRule use RewriteCond %{QUERY_STRING} like this:

RewriteCond %{QUERY_STRING} ^ReturnUrl=.*?index\.html\.var$ [NC]
RewriteRule ^Interface/Base/Login\.aspx$ /Interface/Base/Login.aspx? [R,NC,L]