Filter List Query : Hidden on grid but show in a form field

Hi friends,

I make an Item Type "Test" and create 3 Property named "Vendor_Category" , "Vendor Name" , Vendor Status".

List create for Vendor Category : Steel, Plastic

Filter List Create for Vendor Name:

Values      Filter List

A                 Steel

B                 Plastic

C                 Steel

Filter List for Vendor Status:

Values       Filter List

Ok                A

Not Ok        B

Not Ok                 C

So when i select Steel then In a Vendor name field i get a value " A" and "C". So when i select A then Vendor Status Automatic comes Ok and When I Select C Then vendor Status Comes Not OK in a form . But when i want to see in a grid by clicking on Item in TOC then Vendor Status is blank but when i double click then show in a form .

Kindly help me on this.

Thanks in advance

Abhishek Srivastava