I have an issue with...

... I have an issue with my plugin variable always being null. I initialize it in the Main class' onEnable method that extends JavaPlugin.

Error:

Code (Text):

java.lang.NullPointerException
    at me.TheGamesHawk2001.MineChill.Events.launchRandomSelectEvent(Events.java:52) ~[?:?]
    at me.TheGamesHawk2001.MineChill.Main.onEnable(Main.java:63) ~[?:?]

Code:
Events

Code (Text):

        }.runTaskTimer(Main.getInstance().pl, 20 * startDelaySecs, mins);

Main variable.

Code (Text):

    Plugin pl = null;
    public static Main instance;

onEnable method {
        pl = this;
        instance = this;

}

    public void onDisable() {
        pl = null; //to prevent memory leaks
        instance = null; //to stop memory leaks again
        saveConfig();
        Bukkit.getScheduler().cancelAllTasks();

    }