Pass Filter Results in Ad Hoc View Hyperlink

We are using Jasper 6.1.1.

We have Ad Hoc views which are used as dashlets on a dashboard.  We have set up drill through to a report built in JasperStudio using the Hyperlinks function on the Dashboard using the following syntax:

repo:/[Report_Location]?target_parameter1=$P{Source_Parameter}

This works fine but this only passes data items which are used in the dashlet itself.

However my issue is that on the dashboard we have filters and I need to pass the results of these filters through the hyperlink too.  Has anyone done this before?

I have tried using ?target_parameter1=$P{Source_Parameter} and $P{parameter_name ? "separator"} for multi value filters however none of them work.

Any ideas?

Thanks.