Why is it the NI elvis writer does not compare properly?

I  am trying to write the signal from line 0, line 1, line 8 and line 9 so i have 2 NI Elvis writer as i am operating two different circuit. I am trying to compare if its 1/0 in lines and it line 0 corresponds with line 8 (while line 1 with line 9), a non physical LED will light up to indicated the value matches. It only light up when i press onthe button for line 0 and line 8. but when i press the next buttons for each DO lines control, the LED doesnt light up.
Please help! >< 
Solved!
Go to Solution.
Attachments:
test3.vi ‏92 KB

Sorry, I don't have the elvis drivers, so I had to comment them out, but here's one possibility...
LabVIEW Champion . Do more with less code and in less time .
Attachments:
test3_MODCA.vi ‏44 KB

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