I'm trying to figure out how to find the last update in a column. The column does not always get updated when other columns do. I saw some similar looking formulas like =INDEX([Date/Time]2:Location10, MAX(COLLECT([Date/Time]2:[Date/Time]10, Location2:Location10, <>"")), 7) but they don't seem to work for me - i get invalid data errors.
I am not sure if i am even approaching this correctly - any help would be appreciated!!
Andra