"thebrat26" wrote in message
...
Hi

[PayReceived] is a tick box on a form from a subscriptions table.
[DateDifference] calculates the number of dates between the [DueDate] and
Today’s Date to work out if the subscription payment is overdue by 30 days
or
more and [MembStatus] holds a string depending on how many days overdue
the
payment is.

I am having problems with the nested IIf statement which should calculate
[MembStatus] and no matter what I do I either get a syntax error, too many
brackets error or an error about commas – and I’ve been trawling through
the
questions and answers on this subject and tried this so many different
ways
but can't seem to get it right.

I’ve had problems with even the simplest calculations which then suddenly
seems to update and expressions that did not work previously suddenly work
so
I’m beginning to get a little paranoid – is anyone else having trouble
with
Access? I was using Vista but upgraded to Windows 7 because of other
problems I was having with other programs not updating (Windows Update and
AVG to name 2).

This is what I’m trying to accomplish: [MembStatus] =

If PayReceived = False AND
DateDifference is between 30 and 60 = “Active”
DateDifference is 60 but =90 = “Pending”
DateDifference is 90 but =120 = “Suspended”
DateDifference is 120 but =150 = “Inactive”
DateDifference is 150 = “CLOSED”
Else “Active”

Thank you in anticipation

TheBrat


Without seeing examples of the IIF expressions you've been trying to use, I
can't comment on what you may hve been doing wrong in them. I probably
wouldn't use a nested IIf() for this, though, since the Switch() function
can represent the case structure more precisely:

=Switch([PayReceived]=True, "Active",
[DateDifference]=60, "Active",
[DateDifference]=90, "Pending",
[DateDifference]=120, "Suspended",
[DateDifference]=150, "Inactive",
[DateDifference]150, "CLOSED",
True, "Active")

I broke that onto separate lines to clarify the cases, but it would all be
on one line in the ControlSource of [MembStatus].

You didn't explicitly say what should be shown if DateDifference is 30, so
but your posted logic implies that it should be "Active", so I coded that.

Note that Switch is a VBA function, so to use it like this, VBA must be
enabled in your database. If you're using Access 2007 or later, that means
the database must either be in a trusted location, or you must specifically
enable the VBA. It's possible that Jet Sandbox Mode must also be disabled;
I'm not sure off the top of my head.

--
Dirk Goldgar, MS Access MVP
Access tips: www.datagnostics.com/tips.html

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