Beginner need help with simple graph

Hello together,

I started a view days ago writing data to influxDB and now I want to visualize them
with Grafana. My Dashboard, which you can se beyond, visualizes the a current counter
value with the pie chart. The line graph should visualize the written values over time. If
the counter increases the current value will be written to the database. But as you can se
the max value of the line Chart is not the same as in the pie Chart. Can you tell me what
I`m doing wrong?