I've read the help, but I must not be understanding it. The directory inside the TRY does not exist, so I thought that it would then go to the CATCH and run that code. It doesn't. It just goes to the ENDTRY.

TRY
	MessageFullFileName = ALLTRIM(THIS.HL7OutDirectory) + SUBSTR(SYS(2015),4,8) + ".HL7"
	STRTOFILE(THIS.oSendData.strProcessData,MessageFullFileName,0)
CATCH TO oException
	MessageFullFileName = ALLTRIM(THIS.HL7BackupDirectory) + SUBSTR(SYS(2015),4,8) + ".HL7"
	STRTOFILE(THIS.oSendData.strProcessData,MessageFullFileName,0)
ENDTRY