Coding help for identifying new 3-period hi/lo

Hi all,
I was hoping a coder out there might be able to help with this.

I think it should be pretty easy, but I am unable to code myself.

What I would like to see on the chart, regardless of time frame, a green up arrow whenever a new 3-period high is achieved and a red down arrow whenever a new 3-period low is achieved.

The underlying indicator is a 3 period price channel, I am just unable to code adequately in MT4 to create just the arrow indicators on the chart.

Any help would be greatly appreciated.

Thanks,
MJ

HIGHPOINT = High[iHighest(Symbol(),0,MODE_HIGH,4,1)];
LOWPOINT = Low[iLowest(Symbol(),0,MODE_LOW,4,1)];

This will give you the valuse....

Thanks for the quick response.

I should have been more clear though, when I said coding, I was hoping for the the complete indicator, not just the specific code to identify the new high and lows.

If you would'nt mind constructing the indicicator for me, i would greatly appreciate it.

MJ