tg.setProperty(
new LongProperty(
ThreadGroup.END_TIME,
((Date) end.getDate()).getTime()));
tg.setProperty(
new BooleanProperty(ThreadGroup.SCHEDULER, scheduler.isSelected()));
tg.setProperty(
new StringProperty(
ThreadGroup.ON_SAMPLE_ERROR,onSampleError()));
tg.setProperty(ThreadGroup.DURATION, duration.getText());
tg.setProperty(ThreadGroup.DELAY, delay.getText());