The reason you don't see the effects trigger is because you're adding elements to the chart, you're not changing the underlying data for the chart. You might want to try going through first and setting up the columns like you have but pointing yField to a dummy column, say intervalN. This will create the columns and set the effects. Then after that, you would loop through again and change just the yField property to point to the right column. This will cause the showDataEffect to trigger and you should see your animation.
Vic http://viconflex.blogspot.com
