[Solved]-Highcharts: how to change the yAxis title programatically?-Highcharts

you can use the axis.settitle-method, as in this jsfiddle example.

the method takes in the parameters:

settitle(object title, [boolean redraw])

example code would be:

chart.yaxis[0].settitle({ text: 'the other title' });

the yaxis is an array since there may be multiple y-axis.