Delphi ADO.Command named parameters

I trying simple code on Delphi:

  Connection := CreateOleObject('ADODB.Connection');
  Connection.ConnectionString := 'dsn=rollcontrol_im';
  Connection.Open;

  Command := CreateOleObject('ADODB.Command');
  Command.CommandText := 'SELECT * FROM log where log.id = :id';
  Command.ActiveConnection := Connection;
  Command.Parameters.Append( Command.CreateParameter('id', adInteger, adParamInput, 4 {size}, 5 {value}) );

  RecordSet := Command.Execute();

And I got an error:

[ODBC Firebird Driver][Firebird]Dynamic SQL Error SQL error code = -206 Column unknown ID At line 1, column 35.

If I change param name to ? its working fine:

  Connection := CreateOleObject('ADODB.Connection');
  Connection.ConnectionString := 'dsn=rollcontrol_im';
  Connection.Open;

  Command := CreateOleObject('ADODB.Command');
  Command.CommandText := 'SELECT * FROM log where log.id = ?';
  Command.ActiveConnection := Connection;
  Command.Parameters.Append( Command.CreateParameter('?', adInteger, adParamInput, 4 {size}, 5 {value}) );

  RecordSet := Command.Execute();

How I can use named parameters with OLE ADO.Commanad ? Whats wrong ?

Tnx

:ParamName is Delphi's placeholder for named parameters in its SQL wrapper components, like TADOQuery. It is not ADO's native syntax, ? is the correct placeholder for parameters when working with ADO's OLE API directly.