updating a field after a month

[wannabepro]

UPDATE Tblfin SET Tblfin.Processes = "Active"
WHERE (((Tblfin.Processes)="New") AND ((Tblfin.DateRecieved)<=30));


I need help in this query, what I am trying to do is I want to update a combo box where new records should be updated automatically and become active after a month. I know I am making a mistake, but I don't know where exactly. Because, its only working when date is less than 30 days, but for some strange reason its not doing this for more than value. What should I do?
Thanks in adv.

 

[Brianwarnock]

You will need to use Datediff

Datediff("d",Date(),Tblfin.DateRecieved)<=30

 

[wannabepro]

You will need to use Datediff

Datediff("d",Date(),Tblfin.DateRecieved)<=30

Thanx, but its still giving me all the new records, where it should only show me one, cuz only of the record is over 30 days old, all other ones are not yet close to even 30 yet.

 

[Brianwarnock]

should be >= or just >30

Brian

 

[wannabepro]

should be >= or just >30

Brian

it should be those records which are reaching 30 days or over 30 days.

so should be >=30