How to configure Fallback with x-ui?

[houmie]

I would like to create a fallback, but don't understand how this should work with x-ui.

I created a VLESS-TCP-TLS on port 443 and it works. Then I changed the port above to 5001.
I created a TROJAN-TCP-TLS on port 443 and it works. Then I added a fallback to port 5001.

So when I connect to the server on port 443 with VLESS+TCP+TLS, it should fall back to port 5001 and should work.
But it doesn't work.

Is my configuration, correct? Thanks

{
      "listen": null,
      "port": 443,
      "protocol": "trojan",
      "settings": {
        "clients": [
          {
            "password": "006k1py9Yf",
            "email": "",
            "flow": ""
          }
        ],
        "fallbacks": [
          {
            "name": "VLESS+TCP+TLS",
            "alpn": "",
            "path": "/vless",
            "dest": "5001",
            "xver": 1
          }
        ]
      },
      "streamSettings": {
        "network": "tcp",
        "security": "tls",
        "tlsSettings": {
          "serverName": "domain.com",
          "minVersion": "1.2",
          "maxVersion": "1.3",
          "cipherSuites": "",
          "certificates": [
            {
              "ocspStapling": 36000,
              "certificateFile": "/etc/ssl/vpn/cert.pem",
              "keyFile": "/etc/ssl/vpn/privkey.key"
            }
          ],
          "alpn": [
            "h2",
            "http/1.1"
          ]
        },
        "tcpSettings": {
          "header": {
            "type": "none"
          },
          "acceptProxyProtocol": false
        }
      },
      "tag": "inbound-443",
      "sniffing": {
        "enabled": true,
        "destOverride": [
          "http",
          "tls"
        ]
      }
    },
    {
      "listen": null,
      "port": 5001,
      "protocol": "vless",
      "settings": {
        "clients": [
          {
            "id": "116c2f4c-4adf-49a2-fef3-c945d8a9f4f9",
            "email": "",
            "flow": ""
          }
        ],
        "decryption": "none",
        "fallbacks": []
      },
      "streamSettings": {
        "network": "tcp",
        "security": "tls",
        "tlsSettings": {
          "serverName": "domaincom",
          "minVersion": "1.2",
          "maxVersion": "1.3",
          "cipherSuites": "",
          "certificates": [
            {
              "ocspStapling": 36000,
              "certificateFile": "/etc/ssl/vpn/cert.pem",
              "keyFile": "/etc/ssl/vpn/privkey.key"
            }
          ],
          "alpn": [
            "h2",
            "http/1.1"
          ]
        },
        "tcpSettings": {
          "header": {
            "type": "none"
          },
          "acceptProxyProtocol": false
        }
      },
      "tag": "inbound-5001",
      "sniffing": {
        "enabled": true,
        "destOverride": [
          "http",
          "tls"
        ]
      }
    }
  ]