Anyone? A pointer can help too. Thanks.
You need a calculation do slice your measure therefore you need to create a dimension. Something like
if [Days]>=150 then 5
elseif [Days]>=120 then 4
elseif [Days]>=90 then 3
elseif [Days]>=60 then 2
elseif [Days]>=30 then 1
Since the output is numeric Tableau will leave this calc as a measure. Move it do dimension. Clean your Column shelf and drag the new calc on it.