Pivot Table Slicer Problem

Hi,

Please see the attached Example.

I have built a standard pivot table with a slicer on the month like the below. When I change month to feb it gets rid of the row Completed Outside SLA (30 Calendar Days) I was just seeing if there was a way to still keep this in but change the value to 0 instead of taking it out of the table.

I hope I explained it properly please let me know if you need any more information.

Total # complaints created (% against # jobs) 31
Total # Complaints Closed In Month 17
Completed Outside SLA (30 Calendar Days) 12
Completed Within SLA (30 Calendar Days) 5
Total Complaints Open In Month 14
Completed Outside SLA (30 Calendar Days) 12
Completed Within SLA (30 Calendar Days) 2