return values from Pivot table a multi-item selection

[Mary]

I need to return the selected values from a pivot table
filter when the user has selected multiple values. I
would like to display these values in a heading.

For Example:

Filter (Select multiple weeks)

- 2003
week 1 x
week 2 x
week 3 x
week 4 x
week 5
...
week 53

In this example, the user has selected weeks 1, 2, 3 and 4.
The filter value displays "(Multiple items)". I need to
display those multiple items..."Week 1, Week 2, Week 3,
Week 4"

Thanks for your Help!

Mary