Policy Routing over IPSEC? possible?

Hey Guys,

I have two UTM's running 9.414-2  connected with a S2S IPSEC tunnel,   I'd like to be able to route traffic from site {B} to Gateway [2]  is this possible?

(I do not have access to gateway [2]*  it will only allow traffic from the 192.168.1.0/24)  

HQ Site {A}

HQ Network 192.168.1.0/24

Default Gateway [1] 192.168.1.1

Additional Gateway [2] 192.168.1.250

Policy Route in place: Any traffic from HQ network to 172.0.0.1 send to Gateway 2

Remote Site {B}

RS Network 192.168.2.0/24

Default Gateway 192.168.1.1

Thanks in advance! 

Cheers,