Time Series Chart support

Hi, I would like to ask you guys for a little help with populating time series chart in perspective.
I am getting the data from named query and I cannot figure out why is it not working. See the picture below:

On the next picture is the query:

Weird thing is when I delete all the items in the data list and keep only one it works just fine.

Thanks
Jakub

The data had to be ordered ASC. Now it works