Pie Chart Error

[#1]

Hello,

I am getting this weird error "Positive and negative values in chart".

What does that mean?  Did it find negative number in the expression? 

Is there a way to bypass the error in the pie chart property? 

Your help is much appreciated!

[#2]

This means that the results of the expression of a dimension value is negative...

C u,

Stefano

[#3]

Convert pie in pivot and u see the thing.

Stefano

[#4]

Yes, I found the negative numbers in the dataset, and have removed them.

Thanks everyone.