question

In the new statistics system, we don't get performance measures from charts. You will need to get the data another way.

The TrackedVariable method is a good idea, but it isn't quite working the wave you want in the Experimenter. The issue is that to set the number of team members, the dispatcher deletes every connected object, except the first. Then it replicates the first up to the correct number. In your case, the only TE that updates the tracked variable gets deleted.

So how do you use Statistics Collectors and Calculated Tables as performance measures? You can add a standard performance measure. For the code, you can use

Table("MyStatsCollector")[1][1]

or

Table("MyCalcTable")[8][3]

Basically, the idea is just to retrieve a value out of the table. That leaves you to figure out what value to put in the table. In your case, I would add another calculated table, with a query like

SELECT AVG(TKM) FROM StatisticsCollector2 WHERE TKM > 0

This will average the interval values for all objects. Since I am not quite clear on the statistic you want, you may need to modify the query. Note that you should put the update mode on Always. This means that the Calculated Table will update whenever the value is asked for. In your case, that is once, when the performance measure (Table("CalculatedTable3")[1][1]) is evaluated.