Gateway on SSL VPN

Hi,
I need some help,
I'm have configure a SSL VPN on a Sophos XG 310 but when the client connects he can't not use the VPN as gateway
The default gateway is is home network

with Use as default gateway ON on the SSL VPN remote access I connect but I can go outside I have no internet

how is this done? 

 

Sophos XG 310 SFOS 17.5.9 MR-9