excluded IP range

Hi, 

We have a Fortigate 60D and we have 2 ISP's. 1st ISP is being used by the operation which works fine. 2nd ISP, our plan is to buy an AP, not FortiAp but just an ordinary AP. Just some additional info. 

GW(Fortigate 60D): 192.168.10.254

AP:                         192.168.10.2

This AP has a DHCP feature and so I opted to use the DHCP for the Wifi with the same 3rd octet since this is a flat network.

LAN IP leased: 192.168.10.20-149

WLAN IP leased: 192.168.10.150-199

What I wanted was to exclude to perform a policy based route for the IP range of the WIFI. I was able to do this but I had to individually set 150, 151, 152 and so on and so forth on the PBR. Is there a group for this IP range and use this on the PBR to force it to route to ISP2?

Thanks

Jeff