Web Designer: For Each Column Iteration

Hi There..

When adding a ForEachColumn node in Web Designer It looks like I need to specifiy a Column List in order to iterate through the columns assigned in the collection.

Is there a way that I can define these columns dynamically based on the collection assigned in the ForEachColumn node?

For example.

Using the node structure above will iterate through the 3x selected columns from my collection.
This is fine.

I would like a way to iterate through all of the columns in my collection below rather than the defined columns above without having to define them, so that If I was to add columns later, the ForEachColumn would simply pick up the new property.

Is there anything tricky I can do here using a Code Snippet or List of Properties definition?

Any assistance would be fantastic.

Thanks.