Solved

# dmax error

Posted on 2004-11-16
Medium Priority
359 Views
Experts, All of the fields following me. are txt fields in my form, based on which the vba runs off of. When I run the code, I get an error message.

dhrsleft = IIf((DMax(Me.hdev, Me.ddev) - Me.dev) > 0, (DMax(Me.hdev, Me.ddev) - Me.dev), 0)

I am trying to determine the maximum value between hdev & ddev and use that to calculate the variance between that and dev. For example:
if hdev = 10, ddev= 15 and dev= 10 then I want the dhrsleft = max(10,15)-10 = 5

0
Question by:mc7560

LVL 34

Accepted Solution

flavo earned 252 total points
ID: 12599414
You cant use dmax to do this, its not the same as Excel's Max function (infact there isnt any Access function that does it.

Use this

IIf(Me.hdev > Me.ddev, Me.hdev, Me.ddev) - Me.dev
0

LVL 16

Assisted Solution

GreymanMSC earned 248 total points
ID: 12599720
DMax(Range, Domain) returns the maximum value of the field named Range in table named Domain.
It does not compare the values of the parameters, it uses them to run a query and return the result.

For example: DMax("Cost", "SaleItems").  The query would be:  Select Max(Cost) from SaleItems;

PS: A third and optional parameter, the Criteria, filters the selection.
0

Author Comment

ID: 12599843
Oh- that explains the value that I've been getting. Instead of using the if statement, if I wanted to write a public funtion that looked at the value of two fields, how would I create the function?
0

LVL 51

Expert Comment

ID: 14142825
Do not accept this as a solution.

Public Function MyMax(var1, var2)

MyMax = IIF(var1 > var2, var1, var2)

End Function

=MyMax(hdev, ddev)
0

## Featured Post

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Access custom database properties are useful for storing miscellaneous bits of information in a format that persists through database closing and reopening.  This article shows how to create and use them.
Windows Explorer let you handle zip folders nearly as any other folder: Copy, move, change, and delete, etc. In VBA you can also handle normal files and folders, but zip folders takes a little more - and that you'll find here.
Access reports are powerful and flexible. Learn how to create a query and then a grouped report using the wizard. Modify the report design after the wizard is done to make it look better. There will be another video to explain how to put the final p…
With just a little bit of  SQL and VBA, many doors open to cool things like synchronize a list box to display data relevant to other information on a form.  If you have never written code or looked at an SQL statement before, no problem! ...  give i…
###### Suggested Courses
Course of the Month17 days, 6 hours left to enroll