Biztalk messaging and debatching

HI,

I have the list of orders in this format
<Orders>
  <Order>
     <OrderID>1</OrderID>
     <OrderItems>
        <OrderItem/>
        <OrderItem/>
  </OrderItems>
  </Order>
<Order>
     <OrderID>2</OrderID>
     <OrderItems>
        <OrderItem/>
        <OrderItem/>
  </OrderItems>
  </Order>
</Orders>

Now I need to create separate text files which would contain details for each order like

OrderID : 1
OrderItems
Item1 : ProductName
Quantity : 2

as Order1.txt

and

OrderID : 2
OrderItems
Item1 : ProductName
Quantity : 4

as Order2.txt

I have created debatched message as XMLDoc. If i print out in event log i  can see the whole xml
But I can’t assign this XMLDoc message to FlatFile schema. There is no file created also.

Am not sure how to take the debatched message and create individual text file. Please help

Thanks

sfsf