Hello boatman,

Thank you! Not so hard after all :o)
Yes, i get the peak-valley code, done it plenty in MT4.

When having your attention. You don't happen to have a good example of how to set up and plot Tick-data?

Here is a working Renko example if someone is interested:

Code:
// Renko bars, variant 2 in the manual
int bar(vars Open, vars High, vars Low, vars Close)
{	

	var BarRange = 0.0030;
	var OpenDiff;
	var CloseDiff;
	
	OpenDiff = abs(Close[0]-Open[1]);
	CloseDiff = abs(Close[0]-Close[1]);
	if(OpenDiff < CloseDiff) {
	// If this matches we have a valley or peak
	  Open[0] = Open[1];
	} else {                              
	// This is for when we are moving with the trend
	  Open[0] = round(Close[1],BarRange);
	}
	if(Close[0]-Open[0] >= BarRange) {  // Going up
	  Close[0] = Open[0]+BarRange;
	  High[0] = Close[0];
	  Low[0] = Open[0];
	  return 1;
	}
	if(Open[0]-Close[0] >= BarRange) { // Going Down
	  Close[0] = Open[0]-BarRange;
	  High[0] = Open[0];
	  Low[0] = Close[0];
	  return 1;
	}
	return 4;
}

function run()
{
	set(PLOTNOW);
	StartDate = 2006;
	BarPeriod = 60;
	MaxBars = 400;
		
	//* Plot Parameters
	PlotScale = 8;
	PlotWidth = 10000;
	PlotHeight1 = 500;
	PlotHeight2 = 200;
	

	vars Open = series(priceOpen());
	vars High = series(priceHigh());
	vars Low = series(priceLow());
	vars Close = series(priceClose());
	vars Price = series(price());
	ColorUp = BLUE;
	ColorDn = MAGENTA;
}