Casta

Hi, I've already use an example posted here to graph a Pie2D from a Sharepoint List, also I made another using a Filter Field. Excellenet example!! I'm trying to make another one, but using the Stacked Columns graph, but it's not working. I tried to reuse the other code, making some changes (Categories and dataset values). Do you have a Little example just to see what is the problem that I have? Maybe is not the correct sentences, but I can't find any example code to check this. Tks in advance.