Custom dashboard to measure quarterly performance targets

We would like to use a dashboard to measure our Q1 targets agains Q1 results, but currently the dashboards do not allow us to select a custom field as the Y axis

Hi @Jessica_Strauss , welcome to the forum :wave:
Is the custom field you are trying to add to the chart of your dashboard added to your custom fields library?
If possible, it would help if you could attach a screenshot of your chart editor pane.