Invalid Maximum Heap Size

Hey guys, I'm trying to keep a private server up for me and my friends but i wanted to increase the RAM allocated to the server, when I do, i get this message:


"C:\Program Files (x86)\Java\jre7\bin\java.exe" -Xmx4096M -Xms4096M -jar craftbukkit.jar
Invalid maximum heap size: -Xmx4096M
The specified size exceeds the maximum representable size.
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

C:\Users\KCassano\Desktop\Minecraft>PAUSE
Press any key to continue . . .

I have 16G RAM so i know this is not overly stressing on my machine.
I'm running windows 8.1 on my new computer, I'm used to windows 7 so i'm not sure if the OS is the issue, the Java, or something else entirely, any help would be greatly appreciated.

 

Uninstall all of your Java installations and install JRE 7 64 Bit, then change your start command to

Code:

 java -Xmx4096M -Xms4096M -jar craftbukkit.jar

 

I'm so stupid >.< The fact it was installed in the programs(x86) should have told me straight away!
Thanks you SOOOO much!