I am trying to add a chart with water quallity readings. The readings are a related table to sample stations. ArcGIS Online allows me to add the chart in the Configure Pop up window using the related table, but it keeps changing the field that I am trying to chart. For example, I select "pH Readings" as the field to create the chart on in the settings but when I click ok and try the pop up, it charts the "Alkalinity" field instead (which is the first field alphabetically)
Is this a bug or am I missing something?