How to add a timer to a dynamic created labels in a winform C#?

public Form1()
        {
           
           InitializeComponent();

               p = new Panel();
               p.Size = new System.Drawing.Size(360, 500);
               p.BorderStyle = BorderStyle.FixedSingle;
               p.Name = "panel";

               tpanel = new TableLayoutPanel();
               tpanel.Name = "tablepanel";

               ListBox lb = new ListBox();
               tpanel.Controls.Add(lb = new ListBox() { Text = "qtylistBox2" }, 1, 3);
                       
               Label l6 = new Label();
               tpanel.Controls.Add(l6 = new Label() { Text = "0" }, 2, 1)
//here is the timer that i created
               timer1.Interval = 1000;
               timer1.Tick += new EventHandler(timer1_Tick);
               timer1.Enabled = true;

public void timer1_Tick(object sender, EventArgs e)
        {
             l6.Text = DateTime.Now.ToString("mm\\:ss");

        }