iReport Chart

[rose_mary]

Dear all,

Please help me to display my Data from a SQl Server 2005 DB in a Pie chart using iReport....!!

I have established connection through JDBC and i could see the Record Data in the Detail Band.But when i place a pie chart into the Summary Band run it I am geting some Error...Is showing '$F' is near an invalid character and i removed the brace('{') which came after it automatically into the Key Value Expression...whats wrong with my setting???

Anybody please help me out in this situvation!! I couldn't proceed further..!!!

Plz Help

Thanks & Regards
Rose