cannot use .selectable() and dblclick() together

cannot use .selectable() and dblclick() together

I wrote :
$(function() {
$("#selectable").selectable();
$("#selectable p.ui-state-default").dblclick( function() { 
alert("Hello"); 
} );
});

this doesn't work together... (I want to dblclick any selected item

is that possible ?

thanks fyh