How can I fix the data display on a line chart?

[glendafdz99]

Hi everyone! I'm working on a line chart and all the values that I'm using to build it are between 60 and 70 but when I preview the chart all the values appear align with the zero. Does anyone know how can I fix this? 

When I run the same SQL code on a different app, it works fine so the problem seems to be within Jaspersoft.

This is how my chart looks like on Jaspersoft:

And this is how it should look like:

[mahadiosb]

Series value is more critical in jasper. 
I hope the below link will help you. 
Link: https://jasperreporter.blogspot.com/2022/12/how-to-display-data-on-jasper-report.html

You can generate a Line chart like the one below.