Displaying a multivalue SSRS parameter in the report title

Question

I have a text multivalue parameter in SSRS 2008 which I want to use in the report title.

If I just drag it into the title, when the report runs it says #Error.

What kind of expression do I need to write to get the values as a comma seperated string?

Joao Leal Joao Leal · Accepted Answer · 2012-10-11T11:01:32

The multivalue parameter is an array, to display a comma separated list you need to do something like this:

=Join(Parameters!MultiValueParam.Value, ",")