What function do I use if I want to link $amount over for a particular month?

Pnut Tumin

I need the AMT linked to another sheet, if the OBJ is "503490" and TAX_DATE is in a particular month. (ex. October).

(Many apologies, I am very new to Smartsheet and I am trying to get scheduled for training.)

KPH

I suggest you use an INDEX COLLECT function with cross sheet references.

It would look something like this. The date criteria will depend on how you store the date in your data.

=INDEX(COLLECT({reference to AMT column}, {reference to OBJ column}, "503490", {reference the date}, date criteria), 1)

Are you familiar with any of those functions and how to set up a cross sheet reference?