Algodoo

lol you cannot reset sim.time variable besause it is a SYSTEM variable
so just make other var in console
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scene.my.Jtime := 0.1 (point is needed for real data type)
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Enjoy!

Thanks for your help nice and clear but I think I made a mistake. The variable dosen't count time, it only takes the 0.1 value...

sorry I'm new to coding and don't really understand this system.

I'm also thinking that if the car makes contact with the start gate every time then the Jtime variable will be constantly reset....

Any suggestions?

scene.my.Jtime := 0.1 -- this you need to insert to console (F11)
also you need ane more var (let it be scene.m.JLtime := 0.1 (Real data type too)

that's the code for your @timer@
in finish box it "oncollide" :
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scene.my.JLtime = sim.time; scene.my.Jtime = {sim.time - scene.my.JLtime} (Braces required)
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in "Time-Show" box we write : text:={""+scene.my.Jtime} (braces required)

ok, that all worked good but the jtime variable resets every contact with the car, so every lap it resets... have I done something wrong?

Everything works correctly, but I do not understand a bit what you need.