Connecting hotspot with local web server

Hello,
I have a rb1100ah

this routerboard connected to lan and hotspot but i want user in hotspot can acces my web server in lan
the mapping like this
i want hotspot user after login can acces web server at 192.168.30.91

any help will be greatly appreciated

anyone can help?
it is realy impossible to make hot spot connect to local server?

Create a route to the server network from IP>ROUTES and it will work fine.