GL-XE3000 set APN to IPV6 only?

In most other router/modems for LTE/5G connections when setting up an APN you can pick the IP type normally IPv4 or IPv4/v6 or only IPv6. I cannot seem to find a way to modify this setting in any of the GL.iNET equipment there is no option for this when setting up the APN’s. I’ve already enabled IPv6 in the router and my cellular connection is getting the IP for both V4 and V6 but I want it set to only V6.