Reporting Parameters with Jump to Report Action

I'm in Chart Properties > Data > Values > Edit.
Action tab > Jump to report > Parameters.

I want to jump to another report chart that is paramaterized. For "Parameter Value" I've already discovered you have to change the default "=Fields!xxx.Value" to "=Fields!xxx.UniqueName", but this only works if it is jumping to a single value parameter. I sometimes want to jump to multi-value parameter and don't know what expression should be. I want it to be something like "= included in Fields!xxx.BunchOfValues" but of course this option doesn't exist!

Any suggestions?

IN THIS CASE IN ORDER TO PASS MULTI VALUE PARAMETERS USE THE FOLLOWING SYNTAX

JOIN(PARAMETERS!YOURPARAM.VALUE,",")