Java heap space

hi..I am using java studio enterprise 8 to work on a program.I want to increase the java heap size by using flag like "-Xms256m"But the IDE can't recognize such command...know why?thanks...
[225 byte] By [a35176a] at [2007-10-3 12:00:24]
# 1
> But the IDE can't recognize such command...know why?I am sure it can.There is a forum for that IDE i would look there or in the documentation.
zadoka at 2007-7-15 14:36:47 > top of Java-index,Java Essentials,Java Programming...
# 2
ok....thanks
a35176a at 2007-7-15 14:36:47 > top of Java-index,Java Essentials,Java Programming...
# 3
wat is max limited size of java heap space,can we increase this size during program execution according our requirment as much we want
Shujaa at 2007-7-15 14:36:47 > top of Java-index,Java Essentials,Java Programming...