Candle Stick does not show

[Patrick3131]

Hey!
I could successfully implement the framework to get a line chart but now I want to try to get get a candle stick chart, but the candle stick chart wont show up. The X and Y axis get created and align to the data I set, but the graph itself does not appear.

This is the code I am using:

    class GraphCreation {
        
        let chartData: [ChartData]
        
        init(chartData: [ChartData]) {
            self.chartData = chartData
    
        }
        
        func chartCreationLine(chartView: LineChartView) -> LineChartView {
        
        var lineChartEntry = [ChartDataEntry]()
        
        for i in 0..<chartData.count {
        let value = ChartDataEntry(x: Double(i), y: chartData[i].open)
        lineChartEntry.append(value)
        }
        let line1 = LineChartDataSet(values: lineChartEntry, label: "Number")
        
        let data = LineChartData()
        data.addDataSet(line1)
        chartView.data = data
        chartView.chartDescription?.text = "Chart"
        
        return chartView
        }
        
        func chartCreationCandle(chartView: CandleStickChartView) -> CandleStickChartView {
            var candleChartEntry = [CandleChartDataEntry]()
            
            for i in 0..<chartData.count {
                let value = CandleChartDataEntry(x: Double(i), shadowH: chartData[i].high, shadowL: chartData[i].low, open: chartData[i].open, close: chartData[i].close)
                candleChartEntry.append(value)
                
            }
            
            let set1 = CandleChartDataSet(values: candleChartEntry, label: "Chart")
    
            let data = CandleChartData()
            data.addDataSet(set1)
            chartView.data = data
            
            chartView.chartDescription?.text = "Candle Stick"
            
            
            
            return chartView
        }
        
    }

I of course looked at the demos already, but could not figure out what the problem is or what is missing.

I also set a chartView outlet in the Viewcontroller.

Thanks a lot!