Change image sap.ui.ux3.Feeder

Hi,

Is it possible to change the image of the sap.ui.ux3.Feeder control (the button)?

I want to make the button inside the feeder dynamic, it would be nice if I could change the image and/or add text inside the button.

I've already tried to change the image with jQuery, but I'm not sure if I am doing it right:

$("#Feeder-send-image").attr("src","img/servicedesk.png");

Thanks,

RW