Can you post the code please, or at least the portion where the error occurs. Without that, its going to be very difficult to identify the problem.

Update:Reworded this for clarity a couple of times

VGhpcyBtZXNzYWdlIGludGVudGlvbmFsbHkgcG9pbnRsZXNz

In reply to Re: teach me Chart::Pie by g0n
in thread teach me Chart::Pie by Anonymous Monk

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