The follow Formula give me the correct Value:
=SUM(SUMIFS('POS Data'!$G:$G,'POS Data'!$B:$B,{"5","10","11"}))
However I require part of the criteria to be taken from a cell value. eg
=SUM(SUMIFS('POS Data'!$G:$G,'POS Data'!$B:$B,E1))
E1 cell value = {"5","10","11"}
However the formula gives a 0 value. What am I missing? Why is it not recognizing that E1 is that value?