6DOF(Euler Angles) Simulink Block

Hey I m using 6DOF(Euler Angles) for calculating Spacecraft R & V with time.I am not sure what should I put as initial conditions for Initial Euler Orientation (roll,pitch,yaw) and Initial body rates (p,q,r) in the 6DOF block.I have the Kepler paramters (Classical Parameters) for the spacecraft and initialized the 6DOF block with those (RAAN,Inclination,Arg. of Perigee) but I m not getting correct results.Any ideas how should I initialize the block and what values should I give for Euler angles and body rates.