Trouble outputting digital waveform to single line

i want to output to a single digital line a digital pulse. my current attempt is to generate a digital waveform and then provide this as data to a digital line output. the vi runs, and the waveform appears as i want, but the digital line doesn't output anything? any help would be greatly appreciated!
Attachments:
digital pulse out.vi ‏32 KB

Hi
In reference to my previous post, you can just leave the inner for-loop, but you have to extract the 4 channels.
Just have a look at the picture.
Hope this helps.
Thomas
Using LV8.0
Don't be afraid to rate a good answer...
Attachments:
DigitalWaveform.png ‏6 KB

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