async command issues

gistfile1.txt

            saveCmd = ko.asyncCommand({
                execute: function (complete) {
                    if (canEditSession()) {
                        setTimeout(function() {
                            $.when(datacontext.sessions.updateData(session()))
                                .always(complete);

                        }, 3000);
                        return;
                    }
                    if (canEditEval()) {
                        $.when(datacontext.attendance.updateData(session()))
                            .always(complete);
                        return;
                    }
                },
                canExecute: function (isExecuting) {
                    return isDirty() && isValid;
                }
            }),