Hello,
I have a formula - SUMIFS('Summary 2016'!$E:$E,'Summary 2016'!$B:$B,CONCATENATE(L4," ",M$3)) which works perfectly well but when I try and add a date criteria I get an error message or zero.
e.g. =SUMIFS('Summary 2016'!$E:$E,'Summary 2016'!$B:$B,CONCATENATE(L4," ",M$3),'Summary...