How to add more than one line items to the sales order in Webdynpro?

I have created a webdypro component to create a sales order..I am using a bapi for this..

the selection screen for WD contails the following:

For Header DATA:

1. Order Type

2. Sold to party

3. Ship to party

4. Sales Org

5. Dist Channel

6. Division

For ITEM Data:

1. Item, Mat.no, Target Quantity, Ner VAlue, Plant

When i give the data for the Header field and add an item details and click on create, Sales order is getting createed perfectly,

BUT IF I addmore than 1 line items.. NO SALES ORDER IS GETTING CREATED..............

if i loop the items data.. pointer is not getting inside the loop and it just comes out of loop..

Plz help.....