Please put your script in "code" tags - it makes it much easier to read.
You need to put in a check to ensure that there are enough elements in the array.
Either:
Code:
WHILE @ERROR = 0
$myarray=Split($x,",")
If UBound($myarray)>=3
; Do the updates
Else
"Not enough elements in '"+$x+"'" ?
EndIf
Loop
