I am unable to pass the "Label" from a Category Data Grouping.  I am grouping by Category to distinguish costs:
Labels are "Less than 20 OMR", "Between 20 and 35 OMR" and "Greater than 35 OMR".  The logic for each of the Category groupings is working fine e.g. (=Fields!Total_Current_Charges<20) and displays the <value> and <percent>, but the Label I assign to each Category grouping does not get passed back to the chart.  Below is a screenshot of my configuration.
Thanks in advance!

You can’t pass category labels to the pie chart data labels like that. Also, you should not use the FORMAT function in the Data -> Value field.

You should consider using only <label> in the Data Groupings -> Values -> Data Labels -> Format field:


Then, in the Data Groupings -> Values -> General -> Data -> Label field, use an expression like this:
=IF(Fields!Total_Current_Charges<20, "Less than 20 OMR",
IF(Fields!Total_Current_Charges>35, "Greater than 35 OMR", "Between 20 and 35 OMR")) + " - " +
FORMAT(SUM(Fields!GrossProfit.Value), "N0", "en-us") + " - " +
FORMAT((SUM(Fields!GrossProfit.Value)/SUM(Parent.Fields!GrossProfit.Value)), "P0", "en-us")

Best Regards,
Nevron Support Team

Thanks for your prompt reply.  I made the recommended changes (screenshot of two Format statements); but now gives me an error.

This is because the expression returns an array. Can you send a snapshot of your data - the field of interest is the "Total_Current_Charges".

Since you have category grouping, you may need to update your expression with FIRST for the Total_Current_Charges e.g.:

=IF(FIRST(Fields!Total_Current_Charges)<20, "Less than 20 OMR",
IF(FIRST(Fields!Total_Current_Charges)>35, "Greater than 35 OMR", "Between 20 and 35 OMR")) + " - " +
FORMAT(SUM(Fields!GrossProfit.Value), "N0", "en-us") + " - " +
FORMAT((SUM(Fields!GrossProfit.Value)/SUM(Parent.Fields!GrossProfit.Value)), "P0", "en-us")

Best Regards,
Nevron Support Team

Thanks.... I tried your "First" suggestion.... no joy.  I have attached a snapshot and a copy of November's data (minus cell number, department, name.)  Appreciate your help.

No joy yet.  Attached is the requested information.

Still no joy yet.... This seems to be a pretty straight forward chart; however, I am unable to "pass" the filter criteria labels to either the Legend or the pie chart Data Labels. 
Copy of chart w/o labels and logic.

I am still not able to pass labels to the Label: or the Legend.
Expression appears to work correctly as the percentages are correct. Below is the expression and a picture of the chart.

Steve,
Can you send a snapshot of your data (in Excel spreadsheet). We are going to prepare an example for you.

Best Regards,
Nevron Support Team

Attached is Jan/Feb data from Sharepoint list.  When creating a chart, I set a filter for Iphone charges. 
Thanks for the helping hand(mind)!