Highchart shows only points - highcharts

Question

I'm a newbie in html and javascript.
I'm Trying to make a spline chart with csv data file but the chart only shows the points.
Could anyone help me? Thanks in advance.
The parsing csv code follows below:
jQuery.get(dataFilePath, null, function(csv, state, xhr) {
var lines = [],
date,
// set up the two data series
lightLevels = [];
// inconsistency
if (typeof csv !== 'string') {
csv = xhr.responseText;
}
// split the data return into lines and parse them
csv = csv.split(/\n/g);
jQuery.each(csv, function(i, line) {
// all data lines start with a double quote
line = line.split(',');
date = parseInt(line[0], 10)*1000;
lightLevels.push([
date,
parseFloat(line[1], 10)
]);
});
options.series[0].data = lightLevels;
chart = new Highcharts.Chart(options);
});
});
});
The graph code is:
chart: {
type: 'spline',
backgroundColor: '#464344',
renderTo: 'container',
zoomType: 'x',
spacingRight: 20,
},
navigator: {
enabled: true,
height: 15
},
scrollbar: {
enabled: true,
height: 5
},
rangeSelector: {
enabled: true,
buttons: [{
type: 'minute',
count: 30,
text: '30m'
}, {
type: 'minute',
count: 60,
text: '1h'
}, {
type: 'minute',
count: 180,
text: '3h'
}, {
type: 'day',
count: 1,
text: '1d'
}, {
type: 'day',
count: 2,
text: '2d'
}, {
type: 'all',
text: 'All'
}],
inputDateFormat: '%b %e/%H:%M',
inputEditDateFormat: '%b-%e/%H:%M',
inputDateParser: function(value) {
value = value.split(/[:\.]/);
return Date.UTC(
1970,
0,
1,
parseInt(value[0]),
parseInt(value[1]),
parseInt(value[2]),
parseInt(value[3])
);
},
},
title: {
text: 'Pistas Foam - Cloro Livre (mg/l)'
},
subtitle: {
text: 'Clique e arraste na area do grafico para zoom'
},
xAxis: {
type: 'datetime',
maxZoom: 1 * 1800000
},
yAxis: {
title: {
text: 'Cloro Livre mg/l (0 - 5)'
},
min: 0,
startOnTick: false,
showFirstLabel: false
},
legend: {
enabled: false
},
tooltip: {
formatter: function() {
return '<b>'+ this.series.name +'</b><br/>'+
Highcharts.dateFormat('%H:%M - %b %e, %Y', this.x) +': '+ this.y;
}
},
plotOptions: {
series: {
cursor: 'pointer',
lineWidth: 1.0,
point: {
events: {
click: function() {
hs.htmlExpand(null, {
pageOrigin: {
x: this.pageX,
y: this.pageY
},
headingText: this.series.name,
maincontentText: Highcharts.dateFormat('%H:%M - %b %e, %Y', this.x) +':<br/> '+
this.y,
width: 200
});
}
}
},
}
},
series: [{
name: 'Cloro Livre',
marker: {
radius: 2
}
}]
};