Updating data to the Buffer in java Webdynpro

Hi,

Iam calling the BAPI in simulate mode (to update the buffer) and after that iam deleting one of the line item from the BAPI and passing the same to my webdynpro component.

But it is not updating my component with the correct data as it is taking the data which is passed to the BAPI at initial level.

So i would like to know is there any procedure to update the Buffer so that i can pass the refreshed data.

Thanks,

Bhanu