Regarding qt real time plot using qml wrapper for Qcustomplot

[user03]

I am using the following wrapper: https://github.com/ncp1402/ql-lineplot to plot the data in real-time, I could plot the data in a static manner (not real time) however, on trying the below code (relevant for realtime), my application crashes (no error message)

import QtQuick 2.0
 
import 'src/qml'
import QtQuick.Layouts 1.2
QlLinePlot { id:plot; Layout.fillWidth:true; Layout.fillHeight:true;
 
    // X/Y labels
    labelX: 'time'
    labelY: 'Values'
 
    // show legend
    legend: true
 
    // enable/disable autorange
    autoRange: true
 
    // enable/disable X/Y mouse drag
    dragX: true
    dragY: true
 
    // enable/disable X/Y mouse zoom (with Shift - only X, with Ctrl - only Y)
    zoomX: true
    zoomY: true
 
    // enable/disable time/date format for X axis
    xDate: true
    // time/date format
    xDateFormat: 'hh.mm.ss'
    yPrev:[4,2,3]
 
    property var colors: ['red']
    property var names: ['T1']
Timer{
    id:textTimer
    interval:1000
    repeat:true
    running:true
    triggeredOnStart: true
    // initialize plot
    Component.onCompleted: {
        // remove all graphs
        //clearGraphs();
        // add new graphs
        for (var i=0; i <= colors.length; i++)
                    addGraph(names[i], true, colors[i], 3, 'solid');
 
        var i1=0;
    while(adcreader.hasSample()) //check whether a sample is present or not
    {
 
        plot.addPoints(i1, [adcreader.getSample()]); //get it and plot
    i1++;
    }
     plot.visible= true;
 
    }
 }
 
}

import QtQuick 2.0

import 'src/qml'
import QtQuick.Layouts 1.2
QlLinePlot { id:plot; Layout.fillWidth:true; Layout.fillHeight:true;

    // X/Y labels
    labelX: 'time'
    labelY: 'Values'

    // show legend
    legend: true

    // enable/disable autorange
    autoRange: true

    // enable/disable X/Y mouse drag
    dragX: true
    dragY: true

    // enable/disable X/Y mouse zoom (with Shift - only X, with Ctrl - only Y)
    zoomX: true
    zoomY: true

    // enable/disable time/date format for X axis
    xDate: true
    // time/date format
    xDateFormat: 'hh.mm.ss'
    yPrev:[4,2,3]

    property var colors: ['red']
    property var names: ['T1']
Timer{
    id:textTimer
    interval:1000
    repeat:true
    running:true
    triggeredOnStart: true
    // initialize plot
    Component.onCompleted: {
        // remove all graphs
        //clearGraphs();
        // add new graphs
        for (var i=0; i <= colors.length; i++)
                    addGraph(names[i], true, colors[i], 3, 'solid');
            
        var i1=0;
    while(adcreader.hasSample()) //check whether a sample is present or not
    {

        plot.addPoints(i1, [adcreader.getSample()]); //get it and plot
    i1++;
    }
     plot.visible= true;

    }
 }

}

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I think there is some mistake in the way I have tried to plot, since, I don't have experience of using Qt, any suggestions regarding the changes required will be great!