The second attachment is what I am trying to do. I want the user to select the analog channels (working ok) and then select digital channels (not working) and the add these in the order they selected to a chart (not working). I was using the first vi as a learning experiece to try and incorporate into a more robust program. So the problem I have now is getting the digital channels to be a seperate waveform for each channel the user selects and adding that to the analog signals.
