vb.net call oracle package

Hi Experts

I am trying to call a package within an oracle database from vb.net

The code I am using is

 Try
            Dim userID As New OracleParameter("vELINK_USER_ID", OracleType.Number)
            userID.Value = "20092"
            Dim objectID As New OracleParameter("vOBJECT_TYPE_ID", OracleType.Number)

            Dim resetsync As New OracleCommand
            With resetsync
                .Connection = sqlconn
                .CommandText = "PKG_SYNCHRONIZATION.SP_RESTUSER"
                .CommandType = CommandType.StoredProcedure
                .Parameters.Add(userID)
            End With
            sqlconn.ConnectionString = connstr
            sqlconn.Open()
            resetsync.ExecuteNonQuery()
            sqlconn.Close()
        Catch ex As Exception
            sqlconn.Close()
            MsgBox(ex.ToString)
        End Try

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However I get the following error

ORA-06550: line 1, column 27:
PLS-00302: component 'SP_RESTUSER' must be declared
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored

The package within Oracle is as follows

/* Removes users sync log records to allow reset and re-sync of all records,
   if passed an object type then only that type gets reset */
PROCEDURE SP_RESETUSER(
	vELINK_USER_ID	NUMBER,
	vOBJECT_TYPE_ID NUMBER DEFAULT NULL)
AS
BEGIN

	DELETE MOBILE_SYNC_LOG
	WHERE ELINK_USER_ID = vELINK_USER_ID AND
	(vOBJECT_TYPE_ID IS NULL OR SYNC_OBJECT_TYPE_ID =vOBJECT_TYPE_ID);

END SP_RESETUSER;

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the user does have permission to execute commands so do not believe this to be the issue and would be grateful for any help that could get me around this issue.

thanks

Simon