How to add LENGTH to Description in cutlist?

I use weldments in sheet metal a lot. Here's a simple cut list property of a test part.

I need the Description read something like 6 x 50 x 344.8 (344.8 is the LENGTH)

So each time I un-tick the link check box, copy LENGTH's text expression ( in this case "LENGTH@@@50 x 50 x 6<2>@Part12^AF18025BG101.SLDPRT") and add it to Description property :

6 x 50 x "LENGTH@@@50 x 50 x 6<2>@Part12^AF18025BG101.SLDPRT"

And tick the link check boxes again.

In this case even if there's a design change and the size of weldment changes, CutList's Description is updated with the new length.

Description is a property of weldment profile and I know I can set the Description in profile. But how can I show the length of the weldment after it?

Is there any way to make SW do it automatically? Is it possible to make Solidworks show Description x LENGTH?

Thanks for any kind of advice.