I'm using the following:
{{issue.Story Points}}{{^issue.Story Points}}0{{/}} - {{fieldChange.fromString}}{{^fieldChange.fromString}}0{{/}} + {{fieldChange.toString}}{{^fieldChange.toString}}0{{/}}
But I get errors when the Story Point field was empty or becomes empty.
How do I get it to turn those empty values to 0s to use in the calculation?