FortiWIFI and VLANs

[asgspl]

Hi Guys,

I'm trying to configure a Fortiwifi 50E and integrate it with our standard topology.

We have 7 vlans and two of them are office and hotlan.

Behind the firewall I have a switch, usually an HP or CISCO and it's connect to the Firewall though a trunk(cisco language) to one of the FortiWIFI ethernet ports.(Where I have the L3 sub interfaces)

Now, on those two vlan I've mentioned above, I would like to add wireless capability, meaning that I would like to broadcast let's say: OFFICE-VLAN_wifi and HOTLAN-VLAN_wifi.

I've tried all sorts, hardware switch, software switch, add vlan sub interface on the wifi interface, etc, and I'm not getting anywhere.

Could someone put me on the right track?

Much appreciated,

asgspl