how to set time specific to every minutes in a hour?

[eeezae]

I use datetimepicker in my project, but when I select minutes it shows every five minutes like this as below:

so I wonder I can I choose every minutes in a hour? I would appreciate if anyone can afford me some suggestions.

[eeezae]

Sorry for that I didn't read the introduction page carefully, set minuteStep = 1 which fits my need well, thanks very much and you can close this issue.