Invoke Command to Meter

Blow is the sample code I want o invoke command to meter how i can achieve,
0x01 is on and 0x02 is off like this

static void SendDlmsCommand(string ipAddress, int port, string logicalName, string command)
{
GXDLMSClient client = new GXDLMSClient();
client.IPAddress = ipAddress;
client.Port = port;

try
{
// Connect to the smart meter.
client.Open();

// Authenticate if needed.
// ...

// Select the desired object by logical name.
GXDLMSObject meter = client.Select(logicalName);

// Invoke the command on the meter.
GXReplyData reply = client.Action(meter, command);

// Handle the response from the meter.
// ...

Console.WriteLine("Command sent successfully.");
}
catch (Exception ex)
{
Console.WriteLine("An error occurred: " + ex.Message);
}
finally
{
client.Close();
}
}