ExtJS--dynamically changing column chart y-axis maxValue/range -

I have a chart that has a maximum value of 100 for hardcocoded for y-axis. Is there any way that I can make it dynamic? Because my calculations are in general and there are tens but can go up to thousands or ten thousand. If this happens then the column still can not be rendered and the chart will be empty because the maximum value is only 100.

Thank you

I inspected my chart object in the debugger and gave me my axes Is reached and is dug down and has access to maximum config.

  this.getChart () Axes.items [0]. Max = maximum;