Question about the traffic generator

[Anotai Srikitja <anotai@lis.pitt.edu>]

Hi,
I am now trying to generate the On-Off source traffic using "Traffic/Expoo" 
class. My question is how to set a SEED value for the random generator.
What I know is that the Traffic/Expoo class get the exponential random 
numbers from RNG class. Setting the seed value directly from RNG class 
doesn't work in this case. My goal is to get different independent 
simulation results. 

If anyone could answer this question, please help. 
Thank you,

Anotai