How to reduce the lease duration of ssh otp?

I am use the following comand to generate one time password:

vault write ssh/creds/otp_key_role ip=172.31.47.83

the lease_duration of otp is 768h, I want to reduce the lease_duration to 1h, how can I do it?

or
max-ttl

ttl or max_ttl seem to not applicable for OTP type.
Refer from vault path-help ssh/roles/otp_key_role :

max_ttl (duration (sec))

[Not applicable for Dynamic type] [Not applicable for OTP type] [Optional for CA type]
                                The maximum allowed lease duration

ttl (duration (sec))

[Not applicable for Dynamic type] [Not applicable for OTP type] [Optional for CA type]
                                The lease duration if no specific lease duration is
                                requested. The lease duration controls the expiration
                                of certificates issued by this backend. Defaults to
                                the value of max_ttl.