Solved Cooldown help

I am using the following thread for makign ability cooldowns:
https://bukkit.org/threads/tutorial-better-cooldowns.165811/

However, I am getting an error in the Cooldown class.
Error: "The method convert(long, utilTime.TimeUnit, int) in the type utilTime is not applicable for the arguments (long, TimeUnit, int)"
On this line of code:

Code:

return utilTime.convert((cooldownPlayers.get(player).cooldownMap.get(ability).seconds + cooldownPlayers.get(player).cooldownMap.get(ability).systime) - System.currentTimeMillis(), TimeUnit.SECONDS, 1);

The method 'convert' is in the utilTime class, and this is what it does:

Code:

    public static double convert(long time, TimeUnit unit, int decPoint) {
        if(unit == TimeUnit.BEST){
            if(time < 60000L) unit = TimeUnit.UNIT;
            else if(time < 3600000L) unit = TimeUnit.MINUTES;
            else if(time < 86400000L) unit = TimeUnit.HOURS;
            else unit = TimeUnit.DAYS;
        }
        if(unit == TimeUnit.UNIT) return utilMath.trim(time / 1000.0D, decPoint);
        if(unit == TimeUnit.MINUTES) return utilMath.trim(time / 60000.0D, decPoint);
        if(unit == TimeUnit.HOURS) return utilMath.trim(time / 3600000.0D, decPoint);
        if(unit == TimeUnit.DAYS) return utilMath.trim(time / 86400000.0D, decPoint);
        return utilMath.trim(time, decPoint);
    }

I know this would be a big favour to ask, but could someone more experienced go through the thread mentioned at the top of this post and tell me a fix for this?

Thanks