I finally found the origin of the changing ages: they contain formula’s !!! People of UiPath tutorials, you could at least have told us that! Would have saved me a lot of trouble.
And what the filtering on numbers issue is concerned: it seems you need to write your number as a floating point number.
Found the solution in this thread: Lesson 9 2B Revamped
with a big THANK YOU to @Indra
ashokkarale
MD_Farhan1
Ajay_Mishra
postwick
Dheerendra_vishwakarma
Anil_G
chandreshsinh.jadeja
Gautham_Pattabiraman
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