I just want to delete the value of an cell depending on its content. If the content is 0 i want to delete it when one tries to edit it. So i choose the beforeEditCell event and tried to delete the content in that way.
beforeEditCell:function(rowid, cellname, value, iRow, iCol){
if(value == 0) value = '';
},
I tested it with alert so the event fires the alert, but I have no idea how to delete the old content.