Error during updating DataSource

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C#

Hi,
I have a dataGridView1 with dataSource which is reprezented by object IProcedure (interface), it has 2 properties, String Name and int loadRatio. I am trying to update dataSource with objects from collection IProcedures, but it throws this error: ArgumentException: The value "Data_Layer.Procedures.Create_Team" is not of type "Data_Layer.Procedures.Commit_Team" and cannot be used in this generic collection.
Parameter name: value
Commit_Team implements IProcedure and also Create_Team implements IProcedure.

Error at:

iProcedureBindingSource.DataSource = ProceduresToSelect.Values;

Code:

public Dictionary<String, IProcedure> Procedures { get; set; }
        public Dictionary<String, IProcedure> ProceduresToSelect { get; set; }

        public Form1()
        {
            InitializeComponent();
            cbProcedure.SelectionChangeCommitted +=new EventHandler(cbProcedure_SelectionChangeCommitted);
            Procedures = new Dictionary<string,IProcedure>();
            Procedures.Add("Commit_Team", (IProcedure)new Commit_Team(50));
            Procedures.Add("Create_Team", (IProcedure)new Create_Team(50));
            Procedures.Add("Create_Tournament", (IProcedure)new Create_Tournament(25));
            Procedures.Add("Decline_Team", (IProcedure)new Decline_Team(50));
            Procedures.Add("Player_Registration", (IProcedure)new Player_Registration(30));
            Procedures.Add("Select_Free_Players", (IProcedure)new Select_Free_Players(70));
            Procedures.Add("Select_New_Tournaments", (IProcedure)new Select_New_Tournaments(50));
            Procedures.Add("Select_Player_Detail", (IProcedure)new Select_Player_Detail(70));
            Procedures.Add("Select_Player_Ranking", (IProcedure)new Select_Player_Ranking(70));
            Procedures.Add("Select_Registrations_to_Tournament", (IProcedure)new Select_Registrations_to_Tournament(50));
            Procedures.Add("Select_Teams", (IProcedure)new Select_Teams(70));
            Procedures.Add("Select_Tournmaments", (IProcedure)new Select_Tournaments(50));
            Procedures.Add("Tournament_Registration", (IProcedure)new Tournament_Registration(50));
            cbProcedure.Items.Clear();
            cbProcedure.Items.AddRange(Procedures.Keys.ToArray<string>());
            ProceduresToSelect = new Dictionary<string, IProcedure>(Procedures);
            iProcedureBindingSource.DataSource = ProceduresToSelect.Values;

        }

Could anyone solve this error?

Thanks!
-Pepin z Hané