高分请教：ADO调用存储过程，参数传递顺序导致数据类型转换错误DB_E_CANTCONVERTVALUE

有存储过程如下

create proc PROC_A( @id int, @name varchar(20) ) asbegin    select * from ttt where id = @id and name = @name; end  create proc PROC_B( @name varchar(20), @id int) asbegin    select * from ttt where id = @id and name = @name; end 

C++代码如下

_CommandPtr						m_DBCommand;						//命令对象

	_RecordsetPtr					m_DBRecordset;						//记录集对象

	_ConnectionPtr					m_DBConnection;						//数据库对象



	//连接数据库

	_strConnect.Format(TEXT("Provider=SQLOLEDB.1;Server=%s;Database=%s;Uid=%s;pwd=%s;"),

		szDBAddr,szDBName,szUser,szPassword);

	m_DBConnection->Open(_bstr_t(m_strConnect), L"", L"", adConnectUnspecified)

	m_DBConnection->CursorLocation = adUseClient;

	m_DBCommand->ActiveConnection = m_DBConnection;



	{

		//输出参数

		_ParameterPtr Parameter = m_DBCommand->CreateParameter(TEXT("RETURN_VALUE"), adInteger, adParamReturnValue, sizeof(long), _variant_t((long)0));

		m_DBCommand->Parameters->Append(Parameter);

	}



	{

		_ParameterPtr Parameter = m_DBCommand->CreateParameter("id", adInteger, adParamInput, sizeof(long),  _variant_t((long)1));

		m_DBCommand->Parameters->Append(Parameter);

	}



	{

		const char *pName = "bill";

		_ParameterPtr Parameter = m_DBCommand->CreateParameter("name", adChar, adParamInput, lstrlen(pName), _variant_t(pName));

		m_DBCommand->Parameters->Append(Parameter);

	}



	m_DBCommand->CommandText = "PROC_A";

	m_DBRecordset->PutRefSource(m_DBCommand);

	m_DBRecordset->CursorLocation = adUseClient;

	m_DBRecordset->Open((IDispatch *)m_DBCommand, vtMissing, adOpenForwardOnly, adLockReadOnly, adOptionUnspecified);

参数传递顺序，依次是：int 类型的ID，varchar类型的name
如果调用PROC_A，正确执行
如果调用PROC_B，在调用最后一句：m_DBRecordset->Open则报错：ADO 错误：0x80040e07，从数据类型 char 转换为 int 时出错，捕获的异常是DB_E_CANTCONVERTVALUE
PROC_A和PROC_B仅仅是两个参数顺序不同

想问的问题是，ADO调用程序存储过程传递参数的顺序必须和存储过程参数一样吗？
既然要顺序一直，为何还要求传递参数的时候带上参数名字