selectOptionByLabel with class chosen-results

Hi all,
can you please help me again ?

I want to select (by value) an item of a list. I tryed many ways, but not able to select one of them.

    TestObject to_ListRestaurant = new TestObject('objectName_ListRestaurant')
    to_ListRestaurant.addProperty('class', ConditionType.EQUALS, 'chosen-search-input')
    WebUI.setText(to_ListRestaurant, sRestaurant)
    TestObject to_ListRestaurant2 = new TestObject('objectName_ListRestaurant2')
    to_ListRestaurant2.addProperty('class', ConditionType.EQUALS, 'chosen-results')
    WebUI.selectOptionByLabel(to_ListRestaurant2, sRestaurant, false, FailureHandling.CONTINUE_ON_FAILURE)

==>Unable to select option by label ‘FLUNCH ENGLOS’ of object ‘objectName_ListRestaurant2’
Element should have been “select” but was “ul”


Many thanks in advance for your help.

selectOptionBy keywords only works for html select elements like

<select class='select-restaurant'>

Try use a click on the <li> element