id: 'testsComboBoxTest',
            xtype: 'tests-combo-test',
            name: 'tests_id',
            hiddenName: 'tests_id',
           

var testsComboBoxTest = Ext.getCmp('testsComboBoxTest');
                                testsComboBoxTest.store.load();
                                

var store = this.getStore();
store.setBaseParam('tests_id', combo.getValue());
this.getBottomToolbar().changePage(0);