I have created a chart which have more than one Dimension where the user could switch between them using cyclic group. Also, the user could switch between the different measures using grouped expressions. The third option for the user is change the chart type e.g. from straight table to Pie chart. Every thing is working fine except how the measure data is represented. What I need to know is how I could change measuredata represntation into a relative representation (as %) when the chart is changed from straight table into a Pie chart.