This seemed simple to me before I started.. but this has me foxed..! two columns:
% Complete [Text/Number field]
Date Complete [Date field]
What I intended is for the Date Complete cell to automatically complete with TODAY() when the user updates the "% Complete" cell is set as 100%
..what I have so far is =IF([% Complete]17 < 100, 0, TODAY())
..and I have tried =IF([% Complete]17 = 100, TODAY())
Frustratingly, I can get TODAY() to return the Date when the "% Complete" isnt 100%.. but not when it's 100%
...any ideas..?