Automatic packaging price in price determination(SD-module)

Hi,

We have posted a new condition type in the existing procedure and created condition records. But, when we create a delivery the automatic price is not picked up.We want automatic pick up of packaging price in the delivery.

Is there any exit where we can use to do so?

I found one named 'USEREXIT_SAVE_DOCUMENT_PREPARE'

Can anyone one suggest what code to write in that to achieve the requirement.

Many thanks in advance.

Regards,

Dipen