[Chart property "Show Labels" issue in Stacked bar charts]

Chart property "Show Labels" by default is ticked in Stacked bar charts but some times labels are not diplaying...

 

[how to arrange the subreport dynamically in main report]

Can anyone please suggest...We have a scenario to generate the main report which is having 8 subreports in it and in a sequence.
The challenge here is that, I want to input the sequence in which the subreports will appear in the main report. That means, the subreports should be dynamically arranged based on the sequnence which i input and to be displayed in the main report.
Kindly help me in resolving this.Looking forward to your responses