Ive been looking for an answers on how to use the stacked bar chart....

Suppose in my db i have a field QtyOnHand and PreviousQtyonHand and i want to use the stacked bar chart to compare this two...

This is the sample data:

Product QtyOnHand PrevQtyonHand

Chicken 23 500
Beef 12 50


Compare QtyOnhand with PrevQtyonHand...

Hoping for a fast reply.