Updating Expansion panel subtitle on client side

Hi

Is there a recommended way of updating an expansionpanel's subtitle on client side? I am able to change the subtitle by using selectors, but I would prefer a better way.

I was trying to find something along the lines of:

$("#expansionPanel").data("kendoExpansionPanel").subTitle("new subtitle");

My workaround is this:

$("#form> div:nth-child(1) > div.k-expander-header > div.k-expander-sub-title").text("new subtitle");

Best regards

H-P