Issue with HASONEVALUE.

[SDVN]

Hi,

Am new to Power BI. I am having really tough time understaing some DAX functions like HASONEVALUE. 

I am attempting to use this function like below:

I have choosed 2 location and still I can see the Bar graph but the card shows zero. Why is it not working for the bar graph? My understanding is that, if you choose 2 options in slicer, essentially it should not work. Please suggest. My DAX is:

Hasonevalue 1 = IF(HASONEVALUE(data[Location]), SUM(data[Sales Amount]),0)

Regards,

Sid

[wdx223_Daniel · Accepted solution]

when you selected two locations, in the filter context of card visual there are two values then it got a zero.

but in the bar visual, each bar represents one location, so it always has one value.