Get filtered value in specifc cell

Hello everyone
I have data in range("A8:N200") with headers in row 8 ..
I would filter data according to field N ...
To get filtered value in cell B5 I used this array formula

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I need to convert it to UDF function so as to add a point
The point I need to add is that to return empty if filtered mode=false ..
Hope it is clear
Thanks advanced for help

I found this udf but it doesn't update after filtering data

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Any idea about this topic?

Is it impossible? or the thread is not clear?