Ain't y axis values assignable?

[Tim77277]

So, I am trying to draw a line chart on my app. And I found that somehow I could not assign the values to y axis. But x axis was totally fine. It assumed that the code might automatically generated the values from my data set.

my code is like this below

// simple arrays
let data: [CGFloat] = [3, 4, -2, 11, 13, 15]
let data2: [CGFloat] = [1, 3, 5, 13, 17, 20]

// simple line with custom x axis labels
let xLabels: [String] = ["Jan", "Feb", "Mar", "Apr", "May", "Jun"]
let yLabels: [String] = ["0.1k", "0.2k", "0.3k", "0.4k", "0.5k", "0.6k"]

lineChart = LineChart()
lineChart.animation.enabled = true
lineChart.area = false
lineChart.x.labels.visible = true
lineChart.y.labels.visible = true

lineChart.y.axis.inset = 30
lineChart.x.axis.inset = 30

lineChart.x.grid.count = 5
lineChart.y.grid.count = 6

lineChart.x.labels.values = xLabels
lineChart.y.labels.values = yLabels

lineChart.addLine(data)
lineChart.addLine(data2)

lineChart.translatesAutoresizingMaskIntoConstraints = false
lineChart.delegate = self
chartView.addSubview(lineChart)

[ghost]

Same problem occurs, is there any solution for it?