Amount dunned inserted at dispute case is not reflected in Worklist

Dear all,

I save an amount dunned at Dispute case level (within the area Customer disputed object, inside the BP). However, when I generate again the worklist and see the total open items, the column "Amount dunned" is still zero, it has not been updated.

Shouldn´t the column "Amount dunned" at open items in worklist reflect the detail inside the BP, where I can actually see the dunned amount registered?. What am I doing wrong?

Thanks in advance.