How to use Column index (instead of Column name) in a formula.
Hi,I am trying to do this in a for loop:In current table, I have 14 Columns. Column #3~#14 were named as "Step 1" to "Step 12".In the for loop, I want to create Column #15 (named as "Delta Step i" for i = 2, i <=12, i++), which is calculated with formula (Col(4) -Col(2)). Then Column#3 was deleted. The same formula will be reused in the next iteration. Two problems here,1) my formula doesn't work ...