Issue adding static route to Cisco switch stack

Hi Guys,

I'm working on a 3750x stack trying to add an additional static route for a new subnet we've created at the remote end of a site to site VPN.

Below are some of the routes for the networks in the same office which work absolutely fine (with some info removed):

ip route vrf "office name" 192.168.150.0 255.255.254.0 "firewall IP" name "network name"

ip route vrf "office name" 192.168.180.0 255.255.255.0 "firewall IP" name "network name"

ip route vrf "office name" 192.168.181.0 255.255.255.0 "firewall IP" name "network name"

ip route vrf "office name" 192.168.182.0 255.255.255.0 "firewall IP" name "network name"

However when trying to add the route for 192.168.183.0/24, after adding the route it doesn't appear in the routing table and isn't in the running config, just wondering if anyone has come across this before, below is what im trying to add:

ip route vrf "office name" 192.168.183.0 255.255.255.0 "firewall IP" name "network name"

Any help would be really appreciated