format label of markline and axispointer

[mao tam]

How to format label of markline.

Here is my code

markLine: {
                            symbol: ['none', 'none'],
                            data: [
                                {
                                    name: 'current value',
                                    yAxis: this.dataCandle.values[this.
dataCandle.values.length - 1][1]
                                }
                            ],
                            label: {
                                position: "end",
                                backgroundColor: "#6e7079",
                                color: "white",
                                padding: [4, 8, 4, 8],
                                borderRadius: 3,
                                formatter: function (value) {
                                    return '{c}'
                                }
                            },
                            lineStyle: {
                                color: "#ccc"
                            },
                            silent: true
                        }

i use: formatter: function (value) {
                                    return '{c}'
                                }

or formatter: function (value) {
                                    return libs.format(value)
                                }

not work.

And how to format label of axispointer on the yAsix when mouseover the
cande of candlestick.  It's dependent on label of yAsix. Example I want to
label on yAxis of axispointer has color red and background: blue, and label
of main value in yAxis is yellow. Thanks