ILFormula issue with multiselect options

>
> 2011/6/6 Bernat Romagosa <[hidden email]>
>         Hi list,
>        
>        
>         I've a formula that lets you select among a couple of tags (or
>         add a new tag) as follows:
>        
>        
>                 (formula selectOn: #tags)
>                 multiple: true;
>                 label:  'Tags:';
>                 options: allTags;
>                 addRow: [ :e |
>                 (e a)
>                 text: 'New tag';
>                 action: [
>                 formula
>                 show: self formulaForNewTag
>                 onAnswer: [ :ans |
>                 ans
>                 ifNotNil: [
>                 allTags add: ans key ] ] ] ].
>        
>        
>         allTags is a local variable that gets populated with all tags
>         of all entries in the database.
>        
>        
>         The problem is that, no matter which tags I select, the
>         resulting object's tag list always includes all tags, and I
>         can't figure out why... :(
>        
>        
>         Any help on where to look or what may I be doing wrong will be
>         greatly appreciated, thanks a lot!
>        
>        
>         Bernat Romagosa.
>
>