# Crystal IF statement sometimes evaluates null. How is this possible?

I have the follwoing IF statement in a formula and I was expected it to never evaluate null which is why the "none" is added at the end. I will be adding more to this formula but I want it to work thus far before I proceed.

If (Not(IsNull({ARACCOUNT.ZZACPENDINS}))) and ({ARACCOUNT.ZZACPENDINS} < 0.00) Then
"Insurance balance is negative - Notify Kathy"
Else If ({ARACCOUNT.ZZACSPORIGAMT} = 0) Or (IsNull({ARACCOUNT.ZZACSPORIGAMT})) Then
"No charges"
Else If ({ARACCOUNT.ZZACSPORIGAMT} - {ARACCOUNT.ZZACSPINSPMT} - {ARACCOUNT.ZZACSPINSADJ} - {ARACCOUNT.ZZACSPPMT} - {ARACCOUNT.ZZACSPADJ}) <> {ARACCOUNT.ARACNBTOTINI} Then
"Mathematical issue"
Else
"None"
###### Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Commented:
You need to test for NULL first.

When Crystal evaluates a formula and  it encounters a NULL in a test other than IsNull , evaluation terminates and the value returned cannot be predicted.

``````If (Not(IsNull({ARACCOUNT.ZZACPENDINS}))) and ({ARACCOUNT.ZZACPENDINS} < 0.00) Then
"Insurance balance is negative - Notify Kathy"
Else If (IsNull({ARACCOUNT.ZZACSPORIGAMT}))  OR ({ARACCOUNT.ZZACSPORIGAMT} = 0) Then
"No charges"
Else If ({ARACCOUNT.ZZACSPORIGAMT} - {ARACCOUNT.ZZACSPINSPMT} - {ARACCOUNT.ZZACSPINSADJ} - {ARACCOUNT.ZZACSPPMT} - {ARACCOUNT.ZZACSPADJ}) <> {ARACCOUNT.ARACNBTOTINI} Then
"Mathematical issue"
Else
"None"
``````
If any of the fields in the final IF can be NULL you have to handle them also.

mlmcc

Experts Exchange Solution brought to you by

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Commented:
If you don't specifically need to see the nulls and just need to keep them from "breaking" your formula, then another option might be to change how CR handles nulls.

More recent versions of CR have an option in the formula editor to control how CR handles nulls in a specific formula.

Or, you can go to File > "Report Options" and check the "Convert database null values to default" option, but that will affect just about every formula in the report, so if there are any other formulas where you actually need to see null values, you may not want to use that setting.

James
###### It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Programming

From novice to tech pro — start learning today.