VPN/ SSL VPN settings/ Override hostname- My Public IP isn't permanent. Can I put in xxxx.myfirewall.co?

Question

My public IP changes. I assume the VPN config file currently generated is for today's public IP only. What happens when my public IP changes? Sophos still provides dynamic dns settings, and I've chosen my to be xxxx.myfirewall.co. Can I put it there? Does that mean it will use the hostname provided by Sophos ddns service rather than the Public IP currently seen on the config file?

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LuCar Toni · Accepted Answer

If you do not put any value into Overwrite Hostname, XG will use your current IP of WAN for the Config. As this will change, the config will be unusable after some time.

LuCar Toni · Answer

That is possible. 
 XG will update all the time the current IP and there is a mechanism for the refresh after getting a new public IP. 
 You would put your myfirewall.co hostname into the VPN config.