hmm, i guess it will begin from -2,147,483,648 because integer is signed.
Quote: "INTEGER Range : -2,147,483,648 to 2,147,483,647"
https://www.appgamekit.com/documentation/principles/1_datatypes.htm
you can also use ResetTimer() and count the minutes,hours,days separate.
if me calc right it will happen after 24,85 days.
2147483647 / 1000 = Seconds = 2147483,647 / 3600 = Hours = 596,5232352777778 / 24 = Days 24,85513480324074
if the Timer go into a bigger value it will less accurate because it is a float number.
AGK (Steam) V2017.01.09 : Windows 10 Pro 64 Bit : AMD (16.12.1) Radeon R7 265 : Mac mini OS Sierra (10.12.2)