TreeItem was not Expanding

Hi

I am Working on Flex4.5 based application using TestComplete 8.6.

I am trying  click  Tree item .some times it is Expanding correctly.some times it won't Expanding.i followed below Code to expand tree item.if any other way to click Tree item.

Code:

 selectFolder="AccessRRD/Avon"

        arrFolder=Split(selectFolder,"/")

      log.Message  arrFolder(0)

      log.Message   arrFolder(1)

      delay(1000)         

      for t1=0 to ubound(arrFolder)

      log.Message t1      

      PropNames= Array("FlexObject.data.name")        

       PropValues= Array(arrFolder(t1))                    

    set objSelectFolder=Context.FindChild(PropNames,PropValues, 9)

    aqUtils.Delay 2000

      objSelectFolder.HoverMouse

      aqUtils.Delay 2000

    objSelectFolder.Click

     delay 10000                                                                      

    Next



Please Suggest me.Please find the Tree item object Screen Shots.