st: Trouble with `=`_N'-1'

["Ashim Kapoor" <ashimkapoor@gmail.com>]

Hello everyone,

I wish to make a change in the 2nd last observation.

so I have : replace line = 5 in `=`_N'-1'

But this change the LAST observation! Am I doing something wrong?

funnily replace line = 5 if _n==_N-1 works fine!

Any tips?

Thank you,
Ashim.
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