Sql Server 2005 Inserting Prbblem..wrong SQL? Wrong Parameter?

Im trying to insert a record in my sql server 2005 express database.
The following function tries that and without an error returns true.

However, no data is inserted into the database...
Im not sure whether my insert statement is correct: I saw other example with syntax: insert into table values(@value1,@value2)....so not sure about that

Also, I havent defined the parameter type (eg varchar) but I reckoned that could not make the difference....

Here's my code:


        Function CreateNewUser(ByVal UserName As String, ByVal Password As String, _
        ByVal Email As String, ByVal Gender As Integer, _
        ByVal FirstName As String, ByVal LastName As String, _
        ByVal CellPhone As String, ByVal Street As String, _
        ByVal StreetNumber As String, ByVal StreetAddon As String, _
        ByVal Zipcode As String, ByVal City As String, _
        ByVal Organization As String _
        ) As Boolean
            'returns true with success, false with failure
            Dim MyConnection As SqlConnection = GetConnection()
            Dim bResult As Boolean
            Dim MyCommand As New SqlCommand("INSERT INTO tblUsers(UserName,Password,Email,Gender,FirstName,LastName,CellPhone,Street,StreetNumber,StreetAddon,Zipcode,City,Organization) VALUES(@UserName,@Password,@Email,@Gender,@FirstName,@LastName,@CellPhone,@Street,@StreetNumber,@StreetAddon,@Zipcode,@City,@Organization)", MyConnection)
            MyCommand.Parameters.Add(New SqlParameter("@UserName", SqlDbType.NChar, UserName))
            MyCommand.Parameters.Add(New SqlParameter("@Password", Password))
            MyCommand.Parameters.Add(New SqlParameter("@Email", Email))
            MyCommand.Parameters.Add(New SqlParameter("@Gender", Gender))
            MyCommand.Parameters.Add(New SqlParameter("@FirstName", FirstName))
            MyCommand.Parameters.Add(New SqlParameter("@LastName", LastName))
            MyCommand.Parameters.Add(New SqlParameter("@CellPhone", CellPhone))
            MyCommand.Parameters.Add(New SqlParameter("@Street", Street))
            MyCommand.Parameters.Add(New SqlParameter("@StreetNumber", StreetNumber))
            MyCommand.Parameters.Add(New SqlParameter("@StreetAddon", StreetAddon))
            MyCommand.Parameters.Add(New SqlParameter("@Zipcode", Zipcode))
            MyCommand.Parameters.Add(New SqlParameter("@City", City))
            MyCommand.Parameters.Add(New SqlParameter("@Organization", Organization))
            Try
                MyConnection.Open()
                MyCommand.ExecuteNonQuery()
                bResult = True
            Catch ex As Exception
                bResult = False
            Finally
                MyConnection.Close()
            End Try
            Return bResult
        End Function


Thanks!