12AM - 6AM Clock

I’m trying to make a clock that is a counter (not an actual representation of current time), similar to FNAF. I found this really nice one called Timer Example by DraftyScienceCoat75 but it only displays minutes and seconds, I want hours, minutes, and seconds. Does anyone have any tips or just the code for it? I tried looking up fnaf remakes in flowlab but they only show the hours

try this link:
Flowlab Game Creator - teaching tutorial
note that i set the seconds really fast and you can slow it down to a second.
i hope this helps!