Google play game service, Leaderboards issue?

Hi community,

I've implemented GPG leaderboards in my game, and want to setup leaderboard with level completion time.
So I've configured it as on screenshot below.

But then i re-opened this saved leaderboard and value in section "What it will look like" is displayed as Integer. Also i got the same representation on android device. And this makes me unhappy.

For example result "15 seconds" I want to be displayed as "00:00:15", but i got "15" instead.

Has anyone had the same issue or it's just me? Are there any suggestions or workarounds on this?



P.S. I'm submiting "long" values in milliseconds as per GPG documentation.