Query part in a custom blocking page

Hi all,

I'm new to irules and ASM at all so perhaps this is a stupid question... I need to create a custom blocking page that redirects to a certain URL. In the redirect URL i need the query part of the blocked request and the supportid as a new parameter. I can create a blocking page with a redirect URL in the ASM and there is also a variable for the supportid <%TS.request.ID()%>. But how can i also insert the query part of the original request? Is there also a variable for that ? Can this be done with an irule ?

Thanks in advance, Joachim