KB313442: How to display the filter summary in a Report Services Document dynamically

Symptom:
This Technical Note describes how to display the filter summary of a dashboard dynamically. This is useful for instances when dashboards has a filter panel with multiple filters. This will help the end user understand what selections have already been made without the need to go back to the filter panel to find out what was selected earlier.
 
As you can see below, it is unclear what selections have currently been made without scrolling through the various selectors in the filter selector:

 
Action:

1. Create 2 text box, 1st as {&CurrentSelectionID:nodekey&} and 2nd as {Attribute@ID}
2. Apply conditional formatting to text box 2 {Attribute@ID}, condition is: Selected Text Field Does not equal ""; formatting is replace text with All. As shown below:

1. Put 1st text box above 2nd text box, and apply background color to 1st text box so that is covers the 2nd one.

 
After that, when users select some elements, the 1st text box will display selected elements and covered the 2nd one. When user selects nothing, both text box will be hidden so nothing displayed. When users select all, the 1st text box will be hidden while 2nd will display ALL. This is shown below: