I'm using SUMIFS to return labor hours if criteria is met for name, labor category, etc. Works just fine until I add the section for "less than" a cell that contains a date. Current formula below. Might be a quote error; might be a date format issue; ???? Any help would be appreciated!
=sumifs('Sheet2'!$P$1:$P$1000,'Sheet2'!$B$1:$B$1000,'Sheet1'!A15,'Sheet2'!$G$1:$G$1000,'Sheet1'!C15,'Sheet2'!$M$1:$M$1000,"<'Sheet1'!$A$10")
Where Sheet 1 Cell A10 is a date.
=sumifs('Sheet2'!$P$1:$P$1000,'Sheet2'!$B$1:$B$1000,'Sheet1'!A15,'Sheet2'!$G$1:$G$1000,'Sheet1'!C15,'Sheet2'!$M$1:$M$1000,"<'Sheet1'!$A$10")
Where Sheet 1 Cell A10 is a date.