Can anyone help me with this please?

I have some problems with the mail merge in msword 2003.

Here is an example of my data source from excel

Code Name unit_cost Closing_stock_quantity
123 abc £123 13
321 bac £321 0
231 adsa £451 0

So i try to set up a mail merge to see which item i need to order. i want to reorder the item with 0 closing stock quantity.
My mailmerge is in a table like the one above in excel but i am having problem with the field codes/word field. I only want to show the records that have the "closing_stock_quantity" is 0 but can't after hours trying to figure it out

Here's what my failed mail merge look like


Any help would be grateful