Qliksense background color expression issue

[aniruddhyadutta]

Hi All,

I have a table like below

I want to use a  background color expression as below :If(Count({$<SEVERITY = {'1'}>} Alert_count)>0,LIGHTRED(),YELLOW())

I am getting an extra row which should not come in my understanding

I am not able to understand why this extra row is coming. Though the active alert count is zero its still showing red.

Also my original requirement  is like

If severity =1  then red color else( if severity <>1 and Alert Count>0 ) then Yellow else white

can anyone plz help me with the background color expression.