COMSOL 4.2a Sloshing in a water Tank

Hi,
I just started using COMSOL. I wanted to model the sloshing in a tank of water. I used the tutorial "Sloshing tank" present in the site by modifying the geometry the density and viscosity of the fluid.
The problem is that the program gives me error because it does not converge.
I need to change the tolerance and time steps?
Could you help me?
I attach the program file and the error.

thanks