Not assigned value at MP display

Hi gurus,

I added Z field into particuler cube to differentiate a quantitative data based on purch order document purch order item.

I already made the Z object's assignment to multi provider however if i display purchasing price based on Zfield it only shows Not Assigned, which is impossible. There should be 'X' data as well.

I wonder If I am missing a point a step etc.

Thanks.

Eddy.