Yes, Dave, you're right, of course. And I did learn something.

"Dave Peterson" wrote in message
...
I'm guessing that you're using this is a learning experience--not that
you
really wanted to rewrite =SUM() or excel's addition operator.

Zone wrote:

Interesting, Dave, but a bit longer than emulating the OP's original
desire
to use something like
W(2) <bg
"Dave Peterson" wrote in message
...
Just to add to Bernie's advice to pass all the ranges that affect the
UDF
to the
UDF, you could use:

Function MyUdf(myCell as range, myAdd As Long) As Double
dim Temp as double

if isnumeric(mycell.cells(1).value) then
temp = mycell.cells(1).value
end if

MyUdf = temp + myAdd

End Function

Then you could use a function like:

=myUDF(a2,2)

====
I'm guessing that you're using this is a learning experience--not that
you
really wanted to rewrite =SUM() or excel's addition operator.

Zone wrote:

Thanks, Bernie! A question. I found that if A2 contained 3 and I put
=myudf(2) in B2, then B2 would contain 5, as I wanted. However, if I
then
went back and changed A2 to 7, B2 would not update, but would continue
to
show 5. I changed the UDF as follows:
Function MyUdf(myAdd As Integer) As Double
Application.Volatile
MyUdf = Application.Caller.Offset(0, -1).Value + myAdd
End Function
I actually don't understand application.volatile, but this seemed to
work.
Comments? Thanks also to the others who replied. I should have
explained
better. I mean that I want the cell containing the UDF to have a
value
of
one cell to the left plus the argument value. James

"Bernie Deitrick" <deitbe @ consumer dot org wrote in message
...
Zone,

Function MyUdf(myAdd As Integer) As Double
MyUdf = Application.Caller.Offset(0, -1).Value + myAdd
End Function

HTH,
Bernie
MS Excel MVP


"Zone" wrote in message
...
I want my UDF to add a number to the value of the cell to the left
of
the
cell invoking the UDF. I don't want to specify the location of the
cell.
I want the UDF to know what it is. So, if I put
=MyUdf(2) in cell B2, B2 would contain the value of A2 + 2. I
thought
this would be Application.Caller, but I can't figure it out! TIA,
James




--

Dave Peterson

--

Dave Peterson