How to increase ulimit permanantly

I have the following ulimit limits. The number 532 seems to be from kern.maxproc. But I have ~/.launchd.conf that sets maxproc to a larger value.

~$ ulimit -H -a

core file size (blocks, -c) unlimited

data seg size (kbytes, -d) unlimited

file size (blocks, -f) unlimited

max locked memory (kbytes, -l) unlimited

max memory size (kbytes, -m) unlimited

open files (-n) unlimited

pipe size (512 bytes, -p) 1

stack size (kbytes, -s) 65532

cpu time (seconds, -t) unlimited

max user processes (-u) 532

virtual memory (kbytes, -v) unlimited

~$ ulimit -S -a

core file size (blocks, -c) 0

data seg size (kbytes, -d) unlimited

file size (blocks, -f) unlimited

max locked memory (kbytes, -l) unlimited

max memory size (kbytes, -m) unlimited

open files (-n) 256

pipe size (512 bytes, -p) 1

stack size (kbytes, -s) 8192

cpu time (seconds, -t) unlimited

max user processes (-u) 266

virtual memory (kbytes, -v) unlimited

~$ echo $SHELL

/bin/bash

~$ sysctl -a |grep 532

kern.maxproc = 532

kern.maxproc: 532

~$ cat ~/.launchd.conf

limit maxproc 1024 1024

I could run in my bashrc. But I still can not increase the hard limit.

sudo sysctl -w kern.maxproc=1024

sudo sysctl -w kern.maxprocperuid=1024

Does anybody have a solution to this problem?