Hello Choroszczynski, the Experimentmanager cannot set this attribute. I recommend to use a Variable object of type string as input value containing the Broker path. You must use the Configuration method (menu Advanced Settings of the Experimentmanager) with the code
root.SingleProc1.imp.BrokerPath := root.Variable.
For the validation you can use Broker1.statMediatedCapacity and Broker2.statMediatedCapacity as additional output values. Maybe you must also the change the Broker path of Exporter and Workerpools in the mentioned Configuration method. Regards Peter