Hello Michael,
Thanks for the help it’s really worked 
, Now I have Another doubt about shopware 6. In shopware 5 we are showing the customer comments from the " customercomment" column in s_order table. But in shopware 6 there is no such a column for displaying the comments to the customer. if it is removed in shopware 6 (or) it may comes with shopware 6 normal release.
Best Regards,
Charles