QTP is identifying the flex data grid coulums as spark label instead of flex Link/Spark.This product was developed using Flash Builder 4 with the Flex 4 SDK

I am using QTP 10.0 FLEX 4.5 adding. I am able to identify all the objects except link under "Flex DATA GRID". At the time of recording QTP is not recording anything for clicking the links under Flex Data Grid And trying using the descriptive programming also it doesn’t recognized? Do we have any alternative solution for this?

Acc to developers they said they used the"<mx:LinkButton/> "id=vidFlD" but when I used object spy the Id is empty