I do hope you realise that it takes more than two numbers (or one single value from a #field member, as you've supplied) to display anything representing a pie chart. For example what exactly to you want that #field value to represent? Radius? Circumference? Portion of 100%?, etc... And what is this mysterious 2nd number you hint at, but do not define?
Please understand that while nobody would deny the integrity of any of Valentin's scripts/Xtras, you surely know that it takes much more than two numbers to represent a pie chart - or even a single slice of a given pie chart.
But, I'll bet that his class can get you there. Just wanting you to think about what you are asking for here.
Not a slam, just wanting you to think out loud.
Mark "Cheers II, SD" Boyd
.sigFile addressed at myself, but if the shoe fits...