hi all
I need help on something I am trying to achieve, basically I am trying to use the sumifs function to add a column that is in pounds but with multiple criteria.
I am trying to add a price field but between two dates (between the beginning and end of each month) another criteria from a range of cells I have copied the formula I have written below

=SUMIFS(Sheet1!K:K,Sheet1!B:B,">="&I17,Sheet1!B:B,"<="&J17,Sheet1!W:W,"="&M17)

try to explain a little column K is the column I need to sum column B is the date field that I need to extract i.e. 1st to 31st January (I have put these dates in a cell that correspond to I17 and J17)
then the last bit column W is another criteria that I need met, this works for just one cell however if I try to add another criteria in another cell it doesn't work after M17 I add to the formula ,Sheet1!W:W,"="&M18)

can someone please help before I lose all my hair

thank a lot

Simon