I am trying to make an nl-function where i need to retract data for a certain date range. I would like to filter based on the date needs to be equal or bigger than a cell-reference but i would also like to include blanks. My problem is i don't know how to incude the blanks. Does anyone has a suggestion to a solution?
The formula is as follows (Danish):
=HVIS.FEJL(@NL("Første";"Købspris";"Købspris";"Varenr.";D7;"Leverandørnr.";E7;"Min. antal";"<="&I7;"+Købspris";"*";"Startdato";"<="&Options!$C$4); "")
It is the last part in bold i need to have adjusted to include blanks.