software

I am trying to set up spreadsheet where I can select a range, by date, from a
couple DTPicker activeX controls, and then sum up some values corresponding
to that date range selected in the DTPicker's from a list of dates from
another spreadsheet. I am struggling at the moment though with the SUMIF
function. As far as I can tell the SUMIF only accepts actual values in the
criteria entry, so I can't even read a value from a cell. I want to say
sumif(*my listed dates*,*my selected date range in DTPicker's*, *range of
corresponding values to sum*) but whenever I try to say, for instance gt;E12 in
the criteria, it doesn't read cell e12's value, it takes the value as the
letter e. I'm not sure how to read value's from the DTPicker but I haven't
even tried yet because I can't even read in a cell's value.

Please help

=sumif(quot;A1:A5quot;,quot;gt;quot;amp;E12,quot;B1:B5quot;)

is the answer to the first part

however if you are attempting to set an upper and lower bound on the
date range (ie 2 sumif criteria) you'll need something like the
following array formula:

{=sum(if(A1:A5gt;E12,1,0)*if(A1:A5lt;E11,1,0)*B1:B5)}

HTH