Hello,
I have a similar problem! The histogram express vi, is inside a for-next loop, so that the input signal is different every time. To configure the histogram vi, I use the auto-configure option. The problem lies on the fact the vi does not update the input signal info. Is this a bug, or is there a way to solve the problem? The solution you proposed earlier doesn't seem to work even substituting the autoconfigure constant with a control e make it accessible as a terminal.