I Can Ping Other Device in different IP Network, But I can't Access using Device-name

[Dhanz]

i just a newbie in fortigate,

We have two interface in my FortiGate 60D

LAN 172.19.200.2/24
Wifi 10.0.0.1/24

we Can Akses the device only with the ip address., example LAN to Wifi, Wifi to LAN using ping the ip address..

but when Wifi akses to LAN using Device Name (computer name, printer name) coming the error, the network Access is not accessible. and file sharing can not access too.
can anybody help me to solved it? Thanks,

[Dhanz]

This is My Interface., and I Just want that Inteface Wife and Internal Can Connect each other with \\,Device Name>

The Result of CMD

ipconfig /all

ping to fortigate ddns (Success)

Ping to Local Domain (Not find Host)
still can not Ping Wifi to LAN via Device name

[Dhanz]

ipconfig /all  DNS using Fortigate,

but can not access to jago.fortinp.com, why??