Setting Multiple Ports high with one line of Addrequest

Hi,

I would like to turn on multiple ports on Labjack U3 with just one request for certain duration and then turn them off after a certain delay.

I am able to turn them high but not turn them back low. The following is my code:

ljasm = NET.addAssembly('LJUDDotNet'); %Make the UD .NET assembly visible in MATLAB
ljudObj = LabJack.LabJackUD.LJUD;


[ljerror, ljhandle] = ljudObj.OpenLabJack(LabJack.LabJackUD.DEVICE.U3, LabJack.LabJackUD.CONNECTION.USB, '0', true, 0);
ljudObj.AddRequest(ljhandle, LabJack.LabJackUD.IO.PUT_DIGITAL_PORT,14,34, 6, 1);
ljudObj.AddRequest(ljhandle, LabJack.LabJackUD.IO.PUT_WAIT, 0, 2000000, 0, 0);
ljudObj.AddRequest(ljhandle, LabJack.LabJackUD.IO.PUT_DIGITAL_PORT,14,34,6,0);
ljudObj.GoOne(ljhandle);

ljudObj.Close();

The port I want to turn high are 15 and 19.

Can you explain where I am going wrong exactly or if there is another way to do it. Any help is appreciated.

Thanks

Lalit