Problem with IIf

I am having a problem with an IIf in a text box control source.  What is wrong with this code?

=IIf([txtTotal PartNQtyNeeded]-[txtTotAvail])=<0, 0, [txtTotal PartNQtyNeeded]-[txtTotAvail])

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Rey Obrero (Capricorn1)Commented:
the "=" sign must be after the "<"

=IIf([txtTotal PartNQtyNeeded]-[txtTotAvail])<= 0, 0, [txtTotal PartNQtyNeeded]-[txtTotAvail])

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SteveL13Author Commented:
Got that.  But I also get an error...  "The espression you entered has a function containing the wrong number of arguments".

Rey Obrero (Capricorn1)Commented:
check again what you have ...
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SteveL13Author Commented:
Here is exactly what I have... (copy and paste)

In addition to what cap noticed, your parentheses were mismatched.

You can do either this:
= IIf(([txtTotal PartNQtyNeeded]-[txtTotAvail]) <= 0, 0, [txtTotal PartNQtyNeeded]-[txtTotAvail])

Or this:

=IIf([txtTotal PartNQtyNeeded]-[txtTotAvail] <= 0, 0, [txtTotal PartNQtyNeeded]-[txtTotAvail])

Just a tip...

For syntactical issues in control sources like this, you can put the expression in the VBA editor like this:

x = IIf([txtTotal PartNQtyNeeded]-[txtTotAvail] <= 0, 0, [txtTotal PartNQtyNeeded]-[txtTotAvail])

Doing so makes it easier to track down errors (the expressions turn red if the syntax is off).
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