Add regex to user attributes in Routing

[Alirezag23]

I need to apply different rules for a group of users by using a email template

For example, all email that end with "-S" should use a different outbound or should not have access to adult websites

something look like this:

"outbounds": [
    {
        "tag": "DIRECT",
        "protocol": "freedom"
    },
    {
        "tag": "BLOCK",
        "protocol": "blackhole",
        "settings": {
            "response": {
                "type": "http"
            }
        }
    },
    {
        "tag": "warp+",
        "protocol": "wireguard",
        "settings": {
            "...........": ""
        }
    }
],
"routing": {
    "domainStrategy": "IPIfNonMatch",
    "rules": [
        {
            "type": "field",
            "domain": [
                "geosite:category-porn"
            ],
            "user": [
                "regexp:.*-S$"
            ],
            "outboundTag": "BLOCK"
        },
        {
            "type": "field",
            "user": [
                "regexp:.*-W$"
            ],
            "outboundTag": "warp+"
        },
        {
            "type": "field",
            "outboundTag": "BLOCK",
            "ip": [
                "geoip:private",
                "geoip:ir"
            ]
        },
        {
            "type": "field",
            "outboundTag": "BLOCK",
            "domain": [
                "geosite:category-ads-all",
                "ext:iran.dat:ads",
                "regexp:.*\\.ir$",
                "ext:iran.dat:ir",
                "ext:iran.dat:other",
                "geosite:category-ir"
            ]
        },
        {
            "type": "field",
            "outboundTag": "BLOCK",
            "protocol": [
                "bittorrent"
            ]
        }
    ]
}