Flex :: Accessing Custom Data On DayRender In Flextras Calendar?

I created a Custom Day Render and I would like to access some custom data that I am providing with in the Flextras Calendar dataProvider. here is the code that I have

<flextras:Calendar
id="calendar"
dayRenderer="com.healthways.healthhonors.itemrenderers.MyAwesomeDayRenderer"
monthHeaderRenderer="com.healthways.healthhonors.itemrenderers.MyAwesomeMonthRenderer"[code]...........

Here is the type of Object that I am creating and storying in an ArrayCollection witch gets passed to the Calenders dataProvider

myArrayCollection = new ArrayCollection([{date:new Date(), data:myObject}])

Here is what what my Day Render looks like

package com.healthways.healthhonors.itemrenderers
{
import com.healthways.vo.DateVO;[code]..............

how to see if a renderer has custom data so that I can do some logic on the renderers creation complete.