Try
=SUMPRODUCT(--(ISNUMBER(SEARCH({"X","Y","Z"},aktual_meno))))
Try
=SUMPRODUCT(--(ISNUMBER(SEARCH({"X","Y","Z"},aktual_meno))))
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Nihil simul inventum est et perfectum
Abusus non tollit usum
Last night I dreamed of a small consolation enjoyed only by the blind: Nobody knows the trouble I've not seen!
James Thurber