created workflow criteria is created and everytime edited but it's not working
if priorvalue of internal status is blank or --None-- and record is not isNew()
then update internal status picklist is "In-progress"
AND(
ISPICKVAL(PRIORVALUE( InternalStatus__c), " "),
OR(ISPICKVAL(PRIORVALUE( InternalStatus__c), "--None--")),
NOT(ISNEW())
)
ISBLANK(TEXT(PRIORVALUE(InternalStatus__c)))
to detect blank