Sintaxis incorrecta cerca de la palabra clave "en"

private void SetAccessLevel(string UserName)
{
    SqlCommand cmd_SetAccessLevel = new SqlCommand();
    cmd_SetAccessLevel.CommandText = "inset into tblAccessLevel(User_Name,Can_Add_User,Can_Change_Backcolor) values (@User_Name,@Can_Add_User,@Can_Change_Backcolor)";
    cmd_SetAccessLevel.Connection = con;
    cmd_SetAccessLevel.Parameters.Add("@User_Name",SqlDbType.NVarChar).Value=UserName;
    cmd_SetAccessLevel.Parameters.Add("@Can_Add_User",SqlDbType.Bit).Value=true;
    cmd_SetAccessLevel.Parameters.Add("@Can_Change_Backcolor", SqlDbType.Bit).Value = true;
    cmd_SetAccessLevel.ExecuteNonQuery();
}

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Sintaxis incorrecta cerca de la palabra clave "en"