[Pharo-users] [Pharo] Checkbox

Hi, I have a problem with checkboxes. I'm trying to add a checkbox at each line of a table. I have tried several things(the last tries are in comments): addActionColumn columns add: ((WAReportColumn new) title: ''; valueBlock: [ :row :html | html span with:[ "checked ifTrue:[BibliList bibliCollection add: row]." html checkbox value: checked; onTrue:[BibliList bibliCollection add: row] onFalse:[]. "onClick: [checked := true]" "callback:[:value | value ifTrue: [BibliList bibliCollection add: row]]" ]]). Unfortunately, nothing seems to work...when I click on the checkbox, nothing happen and my list bibliCollection (which is an OrderedCollection) is still empty. Thx for your help alex