Field pull-down in Define New Metric form does not include all fields #20
Description
Open a model and run the model for many steps, then select pause.
In the Analysis tab, select "define new metric". Then, in the "define new metric" form, select the "FIELD" pull-down.
Since there is no opportunity to select a particular type of agent, I am expecting to see the full list of all fields used for any type of agent. Instead, I only see a list of out-of-the-box default fields (like agent_id, agent_name, behaviors, color, direction, etc.). I cannot define a new metric using the agent fields that exist, as shown in attached screen captures.
