I am trying to do a simple CountIF, where the 'if' is whether an Expiration Date field is between a certain range, for example for if Expiration Date in in = January 2020, I would want to count any expiries between 1/1/2020 and 1/31/2020...it doesn't have to be relative, the expiration dates are 'fixed' in the sheet so they won't change or be updated/don't need to be relative to today etc.
Tried something as simple as =COUNTIF([Expiration Date]:[Expiration Date],>12/31/19) but can't get that to even work, is there a trick to this one?