VIP dead ends with no reason why

Hello, 

I am working on deploying a VIP on a FWF60D device, and I am having trouble. I've setup the vip as I believe it should be, its should be forwarding all traffic to the device on mapped IP 10.10.10.21 from the public IP 64.121.5.85. The wan 1 address is 64.121.5.82. I have seen this work in the past, but it's just not working right now. I have put my config details below, Hopefully someone can point out what I am doing wrong. 

Thank you

My details: 

config firewall vip
    edit "DVRincomingVIP"
        set extip 64.121.5.85
        set extintf "wan1"
        set mappedip "10.10.10.21"
    next
end

config firewall policy
    edit 77
        set srcintf "wan_zone"
        set dstintf "dmz"
        set srcaddr "all"
        set dstaddr "DVRincomingVIP"
        set action accept
        set schedule "always"
        set service "ALL"
    next
end

config system interface
    edit "wan1"
        set vdom "root"
        set ip 64.121.5.82 255.255.255.248
        set allowaccess ping ssh
        set vlanforward enable
        set type physical
        set snmp-index 3
    next
end

config router static
    edit 4
        set gateway 64.121.5.81
        set device "wan1"
    next
end