[Solved]-Why code of Horizonal line(y-axis) on a single in Highcharts get applied to all other charts integrated with Webdatarocks-Highcharts

The setOptions sets the options to all charts on the same page.

Try setting the options to the data in the callbackHandler and updateHandler of each chart.

Like this:

function(data){
  data.title = {text: 'My title'},
  Highcharts.chart('highchartsContainer', data);
}