Custom Absolute Value Node

Hi I'm trying to make a node that will do absolute values. Specifically I'm trying to take a list of numbers and if there are any negatives, turn them into positives. But I keep getting this annoying error and I don't know what it means.


I managed to get it to work if I inputted only one number, but I want to turn whole sets of numbers into positives. Is it possible at all?

Oh thanks! That certainly makes things easier.

Don't overcomplicate things. Just use the Formula node with "Abs(x)" - that should work fine with any given list of values.