The y-axis label of the alerting is not displayed correctly

Grafana v8.5.3

But in alert

Should I put each line into a new frame ?

func (ds *SlsDatasource) BuildTimingGraph(logs []map[string]string, xcol string, ycols []string, frames *data.Frames) {
	ds.SortLogs(logs, xcol)
        frame := data.NewFrame("response1")
	fieldMap := make(map[string][]float64)
	var times []time.Time
	for _, ycol := range ycols {
		fieldMap[ycol] = make([]float64, 0)
	}
	for _, alog := range logs {...}
	var frameLen int
	for k, v := range fieldMap {
		if len(v) > 0 {
			if frameLen == 0 {
				frameLen = len(v)
			}
			if len(v) == frameLen {
				frame.Fields = append(frame.Fields, data.NewField(k, nil, v))
			}
		}
	}
	if len(times) == frameLen {
		frame.Fields = append(frame.Fields, data.NewField("time", nil, times))
	}
	*frames = append(*frames, frame)
}
{"results":{"A":{"frames":[{"schema":{"name":"response1","refId":"A","fields":[{"name":"a","type":"number","typeInfo":{"frame":"float64"}},{"name":"b","type":"number","typeInfo":{"frame":"float64"}},{"name":"c","type":"number","typeInfo":{"frame":"float64"}},{"name":"time","type":"time","typeInfo":{"frame":"time.Time"}}]},"data":{"values":[[12785,16153,16144,3292],[8804,12138,12139,-654],[4789,8149,8124,-4650],[1653289200000,1653292800000,1653296400000,1653300000000]]}}]}}}

Thanks for help

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