Repeating timer every 5 minutes?

Hi im looking to make a timer repeat itself every 5 minutes, the plugin currently has

"AutoTimers.Add(timer.Once(TimeBuild, () => StartFightPhase()));"

I took a look at the timer basics in the docs but that doesnt seem to help me i need it to say how long is currently left (Still new to working with plugins)

 

Seemed to do the trick but its switching game phase every 5 minutes instead of displaying how long is left, "Build Phase" is set to last for 30 minutes then its meant to switch to "Fight Phase".

 

Why not do something like:

Code:

const double totalDuration = 1800.0;
const double notificationInterval = 300.0;
var leftoverTime = totalDuration;
timer.Once(totalDuration, StartFightPhase);
timer.Repeat(notificationInterval, (int) (totalDuration / notificationInterval), () =>
{
    leftoverTime -= notificationInterval;
    // broadcast leftoverTime
});

EDIT: Replaced 300 with notificationInterval

 

Im new to this plugin side of things so i may sound a little stupid but how would i change it to that? lol xD

Code:

private void StartBuildPhase()
        {
            DestroyTimers();
            BuildPhase = false;            BroadcastToChat(lang.GetMessage("Title", this) +
                        lang.GetMessage("BuildPhase", this));
          
            BroadcastToChat(string.Format(lang.GetMessage("Title", this) +
                lang.GetMessage("BuildPhaseTime", this),
                (TimeBuild / 60).ToString()));            //Build Rate
            CraftingRate = CraftBuild;            //Gather Rate
            GatherRate = BuildGatherMulti;
          
            //Update
            UpdateGatherRate();
            UpdateCraftingRate();            //Timers
            PhaseStart = DateTime.Now.AddMinutes(TimeBuild / 60);
            AutoTimers.Add(timer.Every(300f, () => StartFightPhase()));        }