My DB have a lot of procedures that uses functions from rfunc.dll, but when I try to uses ODBC Driver connection on C# the UDF functions doesn’t load

Here how I’m doing the connection

public OdbcConnection Conecta(string serverName, string databaseName, string userName, string password, string DriverName)
{
    
    string connectionString = $"User={userName};Password={password};Database={databaseName};DataSource={serverName};Driver={DriverName};";

    // Criar a conexão
    OdbcConnection connection = new OdbcConnection(connectionString);
    try
    {
        // Abrir a conexão
        connection.Open();

        // A conexão foi aberta com sucesso, você pode executar consultas aqui

        return connection;
    }
    catch (Exception ex)
    {
        // Tratar exceção, se necessário
        Console.WriteLine("Erro ao conectar-se ao banco de dados: " + ex.Message);
        //Console.Beep();
        return null;
    }
}

 OdbcConnection FBconnection = new Database().Conecta("127.0.0.1:3050", "My\Database\path\.fdb", "SYSDBA", "masterkey", "Firebird/InterBase(r) driver");

Its all working but the rfunc functions is not working, if someone have any idea?

Firebird 3.0
Firebird ODBC 2.0.5