[CLOSED] RAZOR javascript / gridpanel issue getActiveRecord.set

[OriCoder]

Hi Guys

Trying to set and value on an other column after changing a drop and with blur, of the back of a combobox, edit in a gridpanel

This Works

l.Blur.Handler = "App." + "GridPanel_" + TempData["tabNumber"] + ".editingPlugin.getActiveRecord().set('AccountId','64');";

..... Gives me back the value and my renderer displays what I expect

This does not

l.Blur.Handler = "App." + "GridPanel_" + TempData["tabNumber"] + ".editingPlugin.getActiveRecord().set('AccountId',getDefaultAccount(App." + "GridPanel_" + TempData["tabNumber"] + ".editingPlugin.getActiveRecord().get('partyId')));";

Trying to do it dynamically

Javascript function run and gives back the expected value

 var getDefaultAccount = function (counterpartyId) {

        Ext.net.DirectMethod.request({
            url: 'ExtNet/getDefaultAccount?partyId=' + partyId,
            success: function (result) {
                var str = '' + result.data;
                return str;
            }
        });
    }

.... Stuck