Try this
=SUMPRODUCT(--(INDEX(PBIM,0,1)=A1),--(MONTH(INDEX(PBIM,0,2))=MONTH(B1)),INDEX(PBIM,0,2))
Try this
=SUMPRODUCT(--(INDEX(PBIM,0,1)=A1),--(MONTH(INDEX(PBIM,0,2))=MONTH(B1)),INDEX(PBIM,0,2))
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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