cannot turn on Tun mode when using a json v2ray config

[ShahabSL]

Hello
I have sent this before but it is not fixed, you told me to run the program as admin but that wasn't the solution, when I use a custom json v2ray config and turn Tun mode on, the adapter in control panel which is singbox-tun doesn't start, it should be a trojan or vless or vmess config not a custom json config in order to singbox-tun to start.
my custom configs are json which have fragmentation used in them, and I think that's the cause of this problem.

[ShahabSL]

any ideas?

[Evolve6996]

please add the feature of using custom JSON xray core files to use tun mode, nekoray has it but the problem is its not support xray core anymore
thanks