Thank you dsturrock, your solution helped me a lot!
But I have another question. I think it might be an easy one again.
As I told you, I use different kind of entities, which enter the model with a certain probability written down in the rate tables.
I now want to make a simulation run with excately 10000 Entities (altogether). The "Run" Ribbon does not offer that setting and the soruce itself has a field which says maximum arrivals. But when I type in 10000 at the maximum arrivals field, only around 8500 will in fact enter the model! Do you know why this is, or where I have to change the settings? The problem seems to be very ordinary and common. Maybe I think too complicated!
Thanks for your help once again.