(SOLVED) How to check for missing attribute value in a script?

whitfa

Hi, can anyone help?  I'm a bit new to this.

I'm using a script inside studio.  I'm trying to find out if my

example["myAttribute"] 

value is missing.

I have tried some of these so far:

example["myAttribute"]==? 
example["myAttribute"]=='?' 
example["myAttribute"]==null
isnull(example["myAttribute"])
missing(example["myAttribute"])
example["myAttribute"].missing()
etc..

I just want to check for a null value.

Thanks

whitfa

Woops!

Actually this DOES work:

example["myAttribute"]=='?' 

The only reason I've been scratching my head for so long was because I incorrectly typed myAttribute, and the script didn't warn me for using an attribute name that doesn't exist.  Anyway - solved!