Hi Victor,
Just add a new series and specify its axis.
Something like:
series: [{
data: [29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4],
yAxis: 0
}, {
data: [90, 50, 100, 100, 110, 160, 160, 185, 264, 141, 96, 24],
yAxis: 0
}, {
data: [144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4, 29.9, 71.5, 106.4, 129.2],
yAxis: 1
}]
Is this it?