ForAnyValue:DateLessThanEquals
compares a list of datetimes in a request to a datetime in your policy. Datetime comparisons compare down to the second; so any value one second after the date in your policy will not match the DateLessThanEquals condition.
To match a request, the context key must exist in the request and at least one datetime in the request must match the datetime in your policy.
You can NOT use policy variables in the value of this operator.

