ahhh.
you created formula summarizing each month on one row of data in your data set and are placing these as the show values?
Generally speaking what you want to do would be to
1- use your date field as the "On Change of" field value set to 'per month' - that will create your X axis showing a grouped month of the values in your data set
2 -then add the usage field as as sum in the 'Show value' - this would then create the y axis and plot your points for the line
Edited by DBlank - 28 Jan 2015 at 9:47am
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