Change my one (5)

I believe the answer is:

money

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'change my one' is the definition.
I can't tell whether this definition defines the answer.

'change my one' is the wordplay.
'change' indicates an anagram.
'my'+'one'='myone'
'myone' anagrammed gives 'MONEY'.

Can you help me to learn more?

(Other definitions for money that I've seen before include "It's the root of all evil" , "Mazuma, ackers or dosh" , "Currency; wealth" , "'A fool and his.....are soon parted'" , "See 7" .)

I've seen this clue in the Evening Standard.

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