Random Seed

Hello,

I'm asking myself if there is a chance to set a seed value for ns3-click-simulations. The ns3-part is under control, but how can I make the click random values to be the same on each different simulation run. I tried the element "RandomSeed()" to configure a seed value, but this doesn't work.
I want to have click simulations that will output exactly the same after each run.

Thanks,

Thomas