Problem in ALV layout ...urgent

Hi,

I am using transction VL06C which displays the ALV list. The strucute used by standard program for ALV is LIPOV. There is one include available for customer fields LIPOVZ.

I have inculded my Z structure to it and new field i added is shipmet number. Now i can see the shipment number in the layout of ALV list as hidden field. So I automatically got this field in my ALV list.

Now today I added one more filed quantity to my Z structure. But I cant see that field in my Layout of ALV.

When I debugg I can see the field is getting populated correctly in user exit. Also in Field catalog.

But can not see in Layout when I am trying to change the ALV layout. I can see only Ship. Number

Please suggest.