Final Excel to Access calculation issue

Am trying to convert this Excel formula:

=IFERROR(((1-J11)*I11),"")

On the Access form...

J11 is txtOtherDamage
I11 is txtNetCWT

What would the control be for the field txtFinalCWT where the converted formula would be entered?
SteveL13Asked:
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Gustav BrockCIOCommented:
Probably:

=Nz((1 - txtOtherDamage) * txtNetCWT), 0)

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or:

=(1 - Nz(txtOtherDamage, 0)) * Nz(txtNetCWT, 0)

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0

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Ryan ChongCommented:
there is no "formula" in Access, hence you can create a function to handle that:

function getValue(byval p1, byval p2) as string
   on error goto eh
  getValue =  (1-p1)*p2)
eh:
   getValue = ""
end function

call it like:

dim rtn as string
rtn = getValue(txtOtherDamage.value, txtNetCWT.value)

or you can use it as a control source
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Ryan ChongCommented:
yea, NZ is pretty simple and should be used in your case (I guess). and you can use it to return as "" instead of 0 using below code:

=Nz((1 - txtOtherDamage) * txtNetCWT), "")
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mbizupCommented:
--->> =Nz((1 - txtOtherDamage) * txtNetCWT), "")

This will not work.
1
Ryan ChongCommented:
glad to admit that will not work if we put it into Control Source.

hence, a function should handle that instead.

and correction to my function posted earlier (sorry that didn't test it while posting)

Function getValue(ByVal p1, ByVal p2) As String
    On Error GoTo eh
    getValue = (1 - p1) * p2
    Exit Function
eh:
    getValue = ""
End Function

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hence use:

=getValue([txtOtherDamage],[txtNetCWT])

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