autoload items to combobox from jsonstore

[Bogdan0x400]

I have a combobox with defined jsonstore. The jsonstore loads fine - I've checked it in "load" event of jsonstore. The problem is that combobox doesn't update the items itself, and I also can't find any methods to do that manually. The displayField and valueField values are correct. Am I missing something? Or what can be the reason of items not being loaded?

{            xtype: 'combo',
            store: {
                autoDestroy: true,
                autoLoad: true,
                xtype: 'jsonstore',
                url: "http://someurl"
                totalProperty: 'count',
                root: 'result',
                fields: ["ID", "Name"],
                remoteSort: true,
                sortInfo: {
                    field: 'Name',
                    direction: 'ASC'
                }
            },
            displayField: "Name",
            valueField: "ID",
            forceSelection: true
        }

[Bogdan0x400]

triggerAction: 'all'

This is the solution.