Access Form If Function

[cs93]

Hi


I am using an If function in a form, here it is
=If([Due Date]=25/10/10 OR 26/10/10, "1/10/10", "YES")
Sorry if you dont understand it its just an example. when i view the form #Name? appears in the field containing the function.
The Due Date field definitely exists so i dont know what the problem is. Any help would be appreciated.
cs93

[pbaldy]

Two problems; try

=If([Due Date]=#25/10/10# OR [Due Date]= #26/10/10#, "1/10/10", "YES")