[j-nsp] SSG140 traffic shaping

[SunnyDay]

Hello

when i configure traffic shaping to policies it only seems to work for 
policing bandwidth.
when i try to configure in one  policy  Guaranteed Bandwidth and maximum 
Bandwidth instead of policing bandwidth
i suddenly dont have any traffic at all towards the internet.when i 
return to policing bandwidth everything works ok.
Any ideas why is that happening?
Thank you