Change a character of former dishonesty (6)

I believe the answer is:

reform

I'm a little stuck... Click here to teach me more about this clue!

'change' is the definition.
(reform is a kind of change)

'a character of former dishonesty' is the wordplay.
'former' can be anagrammed to 'REFORM'.
However, I'm unsure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for reform that I've seen before include "Change one's ways (for the better?)" , "Go straight" , "Correct(ion of) abuses" , "Mend one's ways" , "Abandon evil practices" .)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app