I find the solution, for other people, i give you the solution:

                 var reg = new RegExp("[,]+", "g");
                var $reponse=$liste_perimetre.split(reg);
                for (Val in $reponse){
                     jQuery("#peri_cli").setSelection($reponse[Val]);
                };    

in fact setSelection accept only 1 Id. If you have lot of id in an array you must  have to do this.

Bye..;

I write this but nothing appends!

        gridComplete: function(){   
                 var $select = jQuery("#peri_cli").getDataIDs(); //recupérer tous les IDs des enregistrement du grid
                 jQuery("#peri_cli").setSelection($select);
        },

but when I replace $select by an Id like '13' it's works! all my ids have this profil: '000-000-000-blabla'.

do you have an idea?

thank you for your help!

Yes it is possible - use getDataIDs and setSelection methods

Regards

Tony

is it possible that all check box are selected by default in my grid!

regards and thank you for your help!

Aurore