Filtering a column per a maximum value to show on histogram

[wcamargo]

Hi all,

I want to show on the histogram only the values from the 2nd major week.

Example: I have this table with "Week" and "feature_value". And week "6" is the 2nd major week.

Week	feature_value
3	10,1
4	10,5
5	10,7
5	10,3
6	11,1
6	10,7
7	10,3

Basically What I want is this:

Week	feature_value
6	11,1
6	10,7

I succeed doing it in qliksense table with this formula: 

'=Num(Aggr(distinct IF(max(Week,2),feature_value),feature_value))'

But, when I use it on the histogram it appears "The chart is not displayed because it contains only undefined values."

See below the error:

Does anybody know how to solve it?