Not sure if this is doable.  I have an entity (Notification) with an attribute 
for createDate and another for minutesToExpire which is an Integer and has a 
default, but can be changed.

I need to create a qualifier where I get all notifications where the createDate 
is after now - minutesToExpire

I have this for my qualifier, but it doesn't work because I am performing an 
operation on an ERXKey for the minutesToExpire attribute (I marked this with 
[???]).

                ERXRestFetchSpecification<Notification> fetchSpec = new 
ERXRestFetchSpecification<Notification>(
                                                
Notification.CREATE_DATE.after(now.timestampByAddingGregorianUnits(0, 0, 0, 0, 
Notification.MINUTES_TO_EXPIRE [???] * -1, 0)), 
                                                null, 
                                                queryFilter(), 
                                                
Notification.MODIFY_DATE.descs(), 25);

Any ideas for a qualifier to do this?

Wonder from 2 weeks ago, WO 5.4.3
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