ABAP WD application -Adobe form -Cache problem

Hi,

I have an WD application where -in user enters order number and clicks search button then it displays order as adobe form.

I am having problem with cache!

at first if there is a order which has all item data it displays that order properly but immediately if I try for an order which doesn'nt have any entries it brings up old order details.

how can we overcome this?

rgds

Vara