You can use this formula for your time format:
TimeFormat = floor(Timer/60 % 60) & ":" & floor(Timer % 60)
So this is what
I've done.
On function setQuestion
Start Timer(behaviour) "Q" for 0.0
Set Text to: floor(Timer/60 % 60) & ":" & floor(Timer % 60)&(Timer.Timer.CurrentTime("Q"))
On function checkQuestion
Stop Timer.
When the layout starts the setQuestion function begins, and when you press submit the checkquestion function begins. But right now My text "timer" get stuck at 0:00