javascript - Updating a data object with a new value -

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i'm trying update data object new value. have 

 if($("#articlesholder").data(event.data.id) != null)     {                    $("#articlesholder").data(event.data.id, {name:event.data.name, nr:newnr, price:event.data.price, articlenr:event.data.articlenr});     }

now want update existing data object on $("#articlesholder") want update 1 value not values. how i, example, update nr nr +1?

i think it's possible change data value somehting like:

$("#articlesholder").data(event.data.id).nr = '52';

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