D3.js Multiple lines on a chart - d3.js

Question

The lines of my chart are drawing off my chart. I've tried to replace this code:
yE.domain(d3.extent(data, function(E) { return E.close;}));
With this:
yE.domain([0,d3.max(data, function(E) {
return Math.max(E.close, E.Map1, EMap2, E.MapII);
})]);
Based on the answer from Bill: d3.js: dataset array w/ multiple y-axis values
Mine doesn't work.
My entire code:
var marginE = {top: 30, right: 20, bottom: 30, left: 50},
widthE = 400 - marginE.left - marginE.right,
heightE = 270 - marginE.top - marginE.bottom;
// Parse the date / time
var parseDateTimeE = d3.time.format("%Y-%m-%d%H:%M").parse;
// Set the ranges
var xE = d3.time.scale().range([0, widthE]);
var yE = d3.scale.linear().range([heightE, 0]);
// Define the axEs
var xAxisE = d3.svg.axis().scale(xE)
.orient("bottom").ticks(6);
var yAxisE = d3.svg.axis().scale(yE)
.orient("left").ticks(6);
var areaE = d3.svg.area()
.interpolate("bundle")
.x(function(e) { return xE(e.date); })
.y0(heightE)
.y1(function(e) { return yE(e.close); });
// Adds the svg canvas
var svgE = d3.select(".eur")
.append("svg")
.attr("width", widthE + marginE.left + marginE.right)
.attr("height", heightE + marginE.top + marginE.bottom)
.attr('id', 'charteur')
.attr('viewBox', '0 0 400 270')
.attr('perserveAspectRatio', 'xMinYMid')
.append("g")
.attr("transform",'translate(' + marginE.left + ',' + marginE.top + ')')
.attr('width', widthE)
.attr('height', heightE)
.style("font-size","12px");
// Get the data
d3.json("php/downl_EUR.php", function(error, data) {
data.forEach(function(E) {
E.date = parseDateTimeE(E.date +E.time);
E.close = +E.close;
E.MaP1 = +E.MaP1;
E.MaP2 = +E.MaP2;
E.MaPII = +E.MaPII; });
// Define the line
var valuelineE = d3.svg.line()
.interpolate("bundle")
.x(function(E) { return xE(E.date); })
.y(function(E) { return yE(E.close); });
var valuelineE2 = d3.svg.line()
.interpolate("bundle")
.x(function(E) { return xE(E.date); })
.y(function(E) { return yE(E.MaP1); });
var valuelineE3 = d3.svg.line()
.interpolate("bundle")
.x(function(E) { return xE(E.date); })
.y(function(E) { return yE(E.MaP2); });
var valuelineE4 = d3.svg.line()
.interpolate("bundle")
.x(function(E) { return xE(E.date); })
.y(function(E) { return yE(E.MaPII); });
// Scale the range of the data
xE.domain(d3.extent(data, function(E) { return E.date; }));
yE.domain(d3.extent(data, function(E) { return E.close;})); //****
//yE.domain([0,d3.max(data, function(E) {return Math.max(E.close, E.MapII);})]); ****
svgE.append("path")
.datum(data)
.attr("class", "area")
.attr("d", areaE);
// Add the valueline path.
svgE.append("path")
.attr("class", "lineE")
.style("stroke", "steelblue")
.attr("d", valuelineE(data));
svgE.append("path")
.attr("class", "lineE")
.style("stroke", "red")
.attr("d", valuelineE2(data));
svgE.append("path")
.attr("class", "lineE")
.style("stroke", "green")
.attr("d", valuelineE3(data));
svgE.append("path")
.attr("class", "lineE")
.style("stroke-dasharray", ("3, 3"))
.attr("d", valuelineE4(data));
// Add the X Axis
svgE.append("g")
.attr("class", "XaxisE")
.attr("transform", "translate(0," + heightE + ")")
.call(xAxisE);
// Add the Y Axis
svgE.append("g")
.attr("class", "YaxisE")
.call(yAxisE); });

Answer 1

I found the solution myself. Instead of MaP1, Map2 & MaPII, use map1, map2 and mapii -> no capital letters !! (also in the php-file)
Everything works fine now...