This is my chart. The red and green lines are prior year and budget. I want to show prior year and budget for all 12 months. The blue line represents actuals. I only want the blue line to show through the current month (not display if the value is 0). We are in month 2 of our fiscal year, so it shouldn't show values after month 2, until there are values to show.
That calculation condition will just determine if the entire chart should render. It doesn't apply to individual dimensions or measures. Are you able to upload the .qvf file? I'm not sure why the zero or null values are showing.