Yes, just few minutes ago I found solution. I have one array with several FC objects and, I'm going with loop through that array and set every chart in array scroll position.
this.chartObject.addEventListener('scrollEnd', function (eo, ao) { scrollPosition = 0.6782364 - in my example
for (var i = 0; i < self.chartObjects.length; i++) { chartObjects.setChartAttribute('scrollToEnd', ao.scrollPosition);
}
});
Thanks Ayan