Goal Line Chart in Flex

Hello All,
  I'm creating a project that consists of flex chart componnents. However, client requires a goal line in the charts. I've googled allday on this and cant seem to find any samples. Is this even possible? If so, can you please lead me to the right direction.
Kinda like this example..but just have the goal line horizontal.
Jeff

Can you just take the min and max from the data source feeding your line chart, build a separate line chart with start and end corresponding to those two points and y-value corresponding to your goal, and add a second series to the chart? You may need to build a custom lineSegmentRenderer if you want a dashed line but a thin, low-alpha line may look fine.

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    Katherine Xiong
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