Cannot find this.$Notice during vue iview development (scope problem)

this.CtmsWebSocket = new CtmsWebSocket ( / socket-msg?token=$ {this.$store.state.user.token} ,

    {
      params: { name: this.$store.state.user.info.id },
      t: this,
      subscirbeList: [
        {
          url: "/user/queue/message",
          callback(body) {
            if (isNotice) {
              this.$Notice.open({
                title: "",
                desc: body.message,
                duration: 5,
              });
            }
          },
        },
      ],
    });
    
    $Notice
Feb.20,2022

try const self = this ?

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