Hi
The below formula return #VALUE and i'm not sure why
=SUMIFS(INDIRECT("'"&$B$1&"'!$b4:$n17"),INDIRECT("'"&$B$1&"'!$a4:$A17"),$A7,INDIRECT("'"&$B$1&"'!$b2:$n2"),">="&$B2,INDIRECT("'"&$B$1&"'!$b2:$n2"),"<="&$B3)
I have tried the below alternative and get #REF...