I have a problem with a query string in SSI. Syntax isn't valid. The example URL is following:
www.site.com/index.shtml?firstID=100&secondID=104&thirdID=true
<!--if expr="$QUERY_STRING = /^.*firstID=(.*)&.*/" -->
<!--#include virtual="page_1.shtml" -->
<!--#elif expr="$QUERY_STRING = /^.*firstID=(.*)&.secondID=(.*)&.thirdID=(.*)/" -->
<!--#include virtual="page_2.shtml" -->
<!--#endif -->
First 'IF' is correctly, Second is not.
Where am I wrong?