access 2007 timer

I have a timer on hidden form that shuts down my application at 7 pm each evening for updates.  The problem i am having when users tries logon again the application justs keep shutting down because the timer event has already past  Is there anyway to disable the timer event after a period of time through code?  Currently I have to hold  down the shift key(11) to keep that application from closing. I have attached a copy my code below.
centralmikeAsked:
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Rey Obrero (Capricorn1)Commented:
create a table (tblShutDownInfo) with a DateTime Field [varDate] and a YesNo field named [ShutDown]

at the startUp of your db, compare the current date with the value of varDate
If dlookup("varDate","tblShutDownInfo") < Date then
' update the table
   currentdb.execute "update tblShutDownInfo set vardate=Date(), Shutdown=-1"

end if

in your Timer event
check the values of table tblShutDownInfo..

If dlookup("varDate","tblShutDownInfo") = Date And dlookup("ShutDown","tblShutDownInfo")=True  then
   'update the table
    currentdb.execute "update tblShutDownInfo set  Shutdown=0"

   'run shutdown codes here

end if


got the idea?
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centralmikeAuthor Commented:
Can not figure why the shutdown field is not updating? Set the field to a yes/no field but the table never gets updated. A set the vardate field to yesterday and it updates with no problem with the current date.

Private Sub Form_Timer()
  Dim dtCloseTime As Date
    Dim dtCurTime As Date


If DLookup("varDate", "tblShutDownInfo") = Date And DLookup("ShutDown", "tblShutDownInfo") = True Then
   'update the table
    CurrentDb.Execute "update tblShutDownInfo set  ShutDown=0"

   'run shutdown codes here
   dtCloseTime = Format(#11:19:05 PM#, "hh:MM:ss")
   dtCurTime = Format(Time(), "hh:mm:ss")
   
   If dtCurTime > dtCloseTime Then
    Call ExitApplication
   End If


End If
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Rey Obrero (Capricorn1)Commented:
try


CurrentDb.Execute "update tblShutDownInfo set  ShutDown=False"
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centralmikeAuthor Commented:
I must be missing something.  I will send you a copy of the database I am working with. If you take a look at my code to see if I am doing something wrong. I have code in the open of event of the main form and code in the form1 with timer event.
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Rey Obrero (Capricorn1)Commented:
ok...
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centralmikeAuthor Commented:
Here is the file.  I can remembered if I sent this already.
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Rey Obrero (Capricorn1)Commented:
still, no file
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centralmikeAuthor Commented:
Sorry About that.
mytest.accdb
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Rey Obrero (Capricorn1)Commented:
the codes in the open event of the main form is

Private Sub Form_Open(Cancel As Integer)
DoCmd.OpenForm "form1"
'   at the startUp of your db, compare the current date with the value of varDate
If DLookup("varDate", "tblShutDownInfo") < Date Then
' update the table
   CurrentDb.Execute "update tblShutDownInfo set vardate=Date(), Shutdown =True"

End If

End Sub

so open the db, change the date "varDate" to 4/3/2012
close the db and open again
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centralmikeAuthor Commented:
It looks like the tblshutdowninfo is being updated.  The form1 doesn't seem to be shuting down at the schedule time now.  Did you look at the timer event of form1?  Thanks.  I would just like the database to shutdown at a certain time in the evening.  When the user comes in the next day or after midnight the database should be available.
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Rey Obrero (Capricorn1)Commented:
did you follow my instruction at http:#a37808040 ?
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