Updater Script problem - Android

Good morning guys, my device is a MTD Device.
I followed the instructions on Writing an Updater Script.
Here is the content of my updater script.
show_progress(0.1, 0);
format("MTD", "system");
mount("MTD", "system", "/system");
format("MTD", "userdata");
mount("MTD", "userdata", "/data");
package_extract_file("check_data_app", "/tmp/check_data_app");
set_perm(0, 0, 0777, "/tmp/check_data_app");
run_program("/tmp/check_data_app");
package_extract_dir("data", "/data");
set_perm_recursive(1000, 1000, 0771, 0644, "/data/app");
package_extract_dir("system", "/system");
symlink("dumpstate", "/system/bin/dumpcrash");
symlink("debuggerd", "/system/bin/csview");
symlink("mksh", "/system/bin/sh");
symlink("toolbox", "/system/bin/chcon");
symlink("toolbox", "/system/bin/setenforce");
symlink("toolbox", "/system/bin/runcon");
symlink("toolbox", "/system/bin/touchinput");
symlink("toolbox", "/system/bin/getsebool");
symlink("toolbox", "/system/bin/setsebool");
symlink("toolbox", "/system/bin/restorecon");
symlink("toolbox", "/system/bin/getenforce");
symlink("toolbox", "/system/bin/load_policy");
symlink("toolbox", "/system/bin/playback");
set_perm_recursive(0, 0, 0755, 0644, "/system");
set_perm_recursive(0, 0, 0777, 0777, "/system/etc/init.d");
set_perm_recursive(0, 2000, 0755, 0755, "/system/bin");
set_perm(0, 3003, 06755, "/system/bin/ip");
set_perm(0, 3003, 02750, "/system/bin/netcfg");
set_perm(0, 3004, 02755, "/system/bin/ping");
set_perm(0, 2000, 06750, "/system/bin/run-as");
set_perm_recursive(1002, 1002, 0755, 0440, "/system/etc/bluetooth");
set_perm(0, 0, 0755, "/system/etc/bluetooth");
set_perm(1000, 1000, 0640, "/system/etc/bluetooth/auto_pairing.conf");
set_perm(3002, 3002, 0444, "/system/etc/bluetooth/blacklist.conf");
set_perm(1002, 1002, 0440, "/system/etc/dbus.conf");
set_perm(1014, 2000, 0550, "/system/etc/dhcpcd/dhcpcd-run-hooks");
set_perm(0, 2000, 0550, "/system/etc/init.goldfish.sh");
set_perm(0, 0, 0544, "/system/etc/install-recovery.sh");
set_perm_recursive(0, 0, 0755, 0555, "/system/etc/ppp");
set_perm_recursive(0, 2000, 0755, 0644, "/system/vendor");
set_perm(0, 2000, 0755, "/system/vendor/lib");
set_perm_recursive(0, 2000, 0755, 0755, "/system/xbin");
set_perm(0, 1000, 0755, "/system/xbin/busybox");
symlink("/system/xbin/busybox", "/system/bin/busybox");
run_program("/system/xbin/busybox", "--install", "-s", "/system/xbin");
set_perm(0, 0, 06755, "/system/xbin/su");
symlink("/system/xbin/su", "/system/bin/su");
show_progress(0.1, 10);
show_progress(0.2, 0);
assert(package_extract_file("boot.img", "/tmp/boot.img"),
write_raw_image("/tmp/boot.img", "boot"),
delete("/tmp/boot.img"));
show_progress(0.2, 10);
unmount("/system");
unmount("/data");
​
But then it gave me a status 0 problem.
I tried changing the binary update from the one provided in the Android Kitchen Guide then it gave me error
format() expects 3 args got 2.
mount() expects 4 args got 3.
Should i change it the format similar to this one format("yaffs2", "MTD", "userdata"); // mount("yaffs2", "MTD", "system", "/system"); ?
What should i do?