Since I have to do this task couple of times now and in the future a script would make it easier.

I already got this far (create some lines and put them in a list, but I fail selecting the one line where all the intersections are on)

#include "GetObjects.js"

//Set vareables 
var i;
i=0;
var linelength;
linelength=50;

var linelist = moi.geometryDatabase.createObjectList();


//Will draw a line with the given coordinates 
function drawLine(x1,x2,y1,y2) 
{
   	var linefactory = moi.command.createFactory( "line" );
   	linefactory.setInput( 0, moi.vectorMath.createPoint( x1, y1, 0 ) );
   	linefactory.setInput( 1, moi.vectorMath.createPoint( x2, y2, 0 ) );
	    
	var objlist = linefactory.calculate();
   	var line = objlist.item(0);
	moi.geometryDatabase.addObject( line );
   	return line;
}	


for ( var j=0; j < 17; j++ )
{
	linelist.addObject(drawLine(i,i,0,linelength));
	i=i+10;
}
//works fine until here

	

//Will do the intersection 
function DoIntersect()
{
	
	var objectpicker = moi.ui.createObjectPicker();
	//objectpicker.min = 2;
	
	if ( !GetObjects( objectpicker ) )
		return;
	linelist.addObject(objectpicker);
	
	var factory = moi.command.createFactory( 'intersect' );
	factory.setInput( 0, linelist.objects );
	
	factory.commit();
}

DoIntersect();

for the corresponding .htm file I just copied the content of the intersect.htm

It works so far that MoI asks me to pick objects for the intersection. I assume that the lines created by the scipt are in the linelist, so I just select the one line that crosses all the created lines. But that fails in the errormessage attached