How to add expression for each SSRS Graphical bar in Bar Charts
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we have report which represents the data in graphical bar charts. The weekday sales are represented in graphical bar charts.

The report would generate sales per weekday. (e.g.: sales for Monday, sales for Tuesday .... sales for Friday) There will be 5 bars generated on the chart reflecting sum of sales for each weekday. 

> And here comes the actual requirement, when i click on a particular
> bar it should give corresponding sales of that particular weekday
> sales. e.g.:- if I click on the bar (i.e. Wednesday bar) it should
> give me detailed description of sales done on that particular day.

Please see image sample attached below.

![enter image description here][1]

Thanks for your help.


  [1]: http://i.stack.imgur.com/qqkws.jpg