TULISAN

var store = Ext.StoreMgr.lookup("storePTRFINANCEITEM");

var getPnl = Ext.ComponentQuery.query('[name=panelTabPTRFINANCEITEM]')[0];

var getTbl = getPnl.query('[name=gridCELLGRIDPTRFINANCEITEM]')[0];

var records = getTbl.getSelectionModel().getSelection()[0];

var row = getTbl.store.indexOf(records);

for (var i = row - 1; i >= 0; i--) {

    var accgroup = store.getAt(row).get('AccountGroup');

    console.log(accgroup);

    if (accgroup == 'CA') {

        store.getAt(row).set('CashActivityType', _Value);

    }

}