JSON API data source for Grafana

I have a REST API that returns purchases data in Json format. As per the requirement, the client is expecting to represent purchases data in line graphs(Visualization: Graph). I would like to use [JSON API] (JSON API plugin for Grafana | Grafana Labs) data source for Grafana. I tried to create line graphs. But no luck. I would like to know can i create line graphs(Visualization: Graph) using JSON Data. kindly share your thoughts.
Thanks in Advance

just add. no problem, wont hurt. or what is the exact problem?