Mikrotik Fortigate VPN

Hello ,
I have setup VPN between Mikrotik and Fortigate. VPN is up and i can ping both routers from both side.
I cannot ping local network from Fortigate to Mikrotik subnet , i can ping lan from mikrotik to fortigate local subnet.
Mikrotik=192.168.18.254 pinging 192.168.1.200 ( local ip of server).
Fortigate = 192.168.1.254 not pinging anything except Mikrotik ip=192.168.18.254.
Anyone can give any advice.

Many thanks.

Regards.

What kind of VPN? IPsec, SSTP, OpenVPN, …?

At best, provide the output of “/export hide-sensitive” after systematically replacing any public IP address you don’t want to disclose with a unique pattern such as a.a.a.a.