[JasonF]

Maybe I am not understanding the question completely

But If you have an Array of data already that is changing Simply use a "Replace Array Subset", set the index to 7 (DIO 8 on the DS) and the new element to True or False. This will leave the rest of the data in the Array untouched, changing only the 1 element

Other wise build your array with Boolean Values. Using the Set DIO DS VI drop a "build array" In, expand it to 8 Elements (0-7) and then use Constants on the Last Output and whatever outputs you are not using for False. Then pass your data into the Outputs that fluctuate.

I Hope this helps, if not send me a message or something, I have been working on the DIOs for the past couple days...

Jason