Show dataLabels in heat map generated from ad-hoc view

Hi.

I had a domain on JasperSoft Server and using the domain, I created an ad-hoc view. I used this view to generate a heat map report. I have added properties under Advanced Chart Format options for displaying the data labels in the field measures of cross-tab.

The view looks like below : 

Each value can be seen here. This is how it is seen in the view but when we export it as excel/pdf or any pther format, we are unable to see certain values though the values are present. 

After export, the report looks like below : 

What should I do to get to display all my values after export? Kindly help me out.