BPMON Measured value 0 but shows records in Details Info

Hi,

In BPMON alert inbox , for a custom monitor after a alert it shows measured value 0 , no records selected for

current input,

but when we click on detail info and login to satellite system(ECC)

it shows 2 records in output ,which is selected in last collector run (below image chk date),

  Ideally it should show zero instead why it is showing

last collector run records.?

Thanks,

Kannan N