[Pharo-project] problem with updating checkBoxes in morph

Hi, Here is what I want to do: - I have checkbox: ChekboxMorph new - A checkbox is made of a label and a button - I want to do a specific action when there is a mouse click on the button For that: - I saw that there is a method #on:send:to: in Morph with wich we can do: checkbox on: #click send: #amessage to: receiver Problem: - when I do checkbox on: #click send: #amessage to: receiver, all is ok. - when I do checkbox buttonMorph on: #click send: #amessage to: receiver, to consider the click on the button, it doesn't work, the event is never handled (whereas #mouseDown for example is handled).