adding new content slot

Hi,

I am trying to add new content slot to ProductDetails page. Edited the velocity template and created new slot. However the new section does not reflect in powertools site. I have added this to the velocity template :-

                 <cockpit code="New Slot Crossed" />
             </td>

But the content of this slot doesnt show up on the page.... Can you please suggest what i must be missing.

Please help.