Expression evaluation error in rule 'apn_uipiechartfromrecordtype'

Question

I have defined a record type for which no records currently exist. When I browse to the record, the list view displays "No records available". However, a report I've created via APN_uiPieChartFromRecordType displays this error message when I click on it: "Expression evaluation error in rule 'apn_uipiechartfromrecordtype' at function 'apply' parameter 2 [line 25]:" What is the best practice for dealing with this situation?... 
 OriginalPostID-78221 
 OriginalPostID-78221

Alex Weller · Accepted Answer

Hi Linda, you could validate the list before passing it into the apply function. If the list is empty do something else that wont fail. If the list exists, go ahead and pass it into the rest of your code: =if(length(list)>0,apply...,else)

Alex Weller · Answer

Linda, please allow me to make a correction. To test your list, use APN_isEmpty() rather than length