Can you have 2 heads or 4 hands?
nope
http://en.wikipedia.org/wiki/2147483647
This is max 32bit integer number and GP can't be higher then this number.
You have now -1948470351 if you will add +1948470351 GP again you will have 0.
I can't reset it when server is running (it rollback to original value)

http://en.wikipedia.org/wiki/2147483647
This is max 32bit integer number and GP can't be higher then this number.
You have now -1948470351 if you will add +1948470351 GP again you will have 0.
I can't reset it when server is running (it rollback to original value)