Bridge between interface and vlan

Hi everyone,

I'm sure this has been asked and solved by others in the past but I guess I am not using the right terms because so far I have not been able to find the solution so here goes:

I have an out of band management switch that I hooked up directly to an ethernet port on my fortigate but I also want the OOBM vlan to be available on the trunk to the backbone so that management servers etc that live on virtualization hosts can actually be on this vlan.

I tried some different ways of adding both interfaces on this VLAN but didn't get traffic passing between the two as far as I can tell.

Any pointers before I have another crack at it would be greatly appreciated!