Trouble with getting a SmartSheet Formula to Work for counting past due tasks by assigned.

So i've been trying to come up with a formula that will count all past due tasks by assigned user.

I was able to get a formula to show ALL tasks (due and not due) by assigned

[=COUNTIF({Project Tracker Range 1}, Who@row)]

I use the formula to shows ALL past due from ALL users:

[=COUNTIFS({Project Tracker Range 3}, <TODAY())]

However when it comes to the variable of past due by assigned it errors, #invalidoperation:

=COUNTIF(AND({Project Tracker Range 2} = Who@row, {Project Tracker Range 3} < TODAY()), < TODAY())

Any help would be much appreciated, spending too much time trying to figure this out.


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