thanks chrono! good learning for not declaring global vars, thanks! will post as question next time!

Thanks. I figured it out yet.

Your code being wrong is not a kata issue, try in your IDE calling your function several times, the global var will carry the previous value and that'll give your wrong results after the first one. Use question label for things like this.

Your solution would fail this:

Test.assertEquals(makeNegative(1.00001), -1.00001);

Thanks! My mistake misreading regarding how to treat 0s :)

Why are you rounding it at all? The description say nothing about rounding.

aha thanks!

Because it will return true for pin like "-123" or "a23456".

solved it... the exclamation mark of course changed the hash so it passed first but not later...