why update not taking effect in server

[ding yan]

Hi, 

I'm following the sample python to update one of the label in JIRA. Here is the main part of the code:

........

issue = jira.issue('ABC')

issue.update(fields={'lables': ['testing']})

print(issue['fields']['lables'])

The code runs ok. However, when I open the issue 'ABC' from JIRA UI, the labels still show the old one. Any idea where is wrong?

thanks