Can I use a VBA function I write myself in a formula?

[David Laub]

Can I use a VBA function I write myself in a formula? It appears to be
impossibe...



Thanks

David Laub (e-mail address removed)

 

[Frank Kabel]

Hi
use a macro like

public function my_function()
my_function=1234
end function

and in a cell type:
=MY_FUNCTION()

See: http://www.mvps.org/dmcritchie/excel/getstarted.htm

 

[David Laub]

When I try this, I get a "Invalid Name' error in Excel - i can use built in
function and named cells fine

Is there some sort of subtle scoping/fully qualified name" issue

 

[Frank Kabel]

Hi
where did you put this code?. It has to go in a standard module (see
the link I provided to you)

 

[David Laub]

Thanks again - I originally placed it in Sheet1 object instead of a New
Module

P.S. I read your note for listing User Defined Functions, but I don't know
how to "see" the Function Wizard list - can you help me even more?

Thanks

 

[David Laub]

Here's a bonus question: Thanks to your tip, I can invoke a User Defined
Function to populate a cell!
What I'd really love to do additionally is invoke a User Defined function as
part of formula based custom Data Validation - when I try this on a UDF that
works great as a formula cell value, I get a "can't find named range"
error - i.e. the Data Validation dialog is not understanding that the name
of my function is a user defined function - I can enter built-in function
names, or named cells, but (so far) I can't enter a user defined function

Thanks again

 

[Frank Kabel]

Hi
AFAIK you can't use UDFs within Data Validation. Just an Excel
restriction!

 

[David Laub]

Thanks - I'll stop spinning my wheels on that one!!!

 

[Norman Jones]

Hi Frank,

I believe, however, that you can use a data validation formula that refers
to a cell that uses the UDF.

 

[Frank Kabel]

Hi Norman
correct. This would be a workaround - just forgot it