Refreshing objects on background charts

 

Hello,

I have 22-23 charts with an indicator in a subwindow and attached EA.

The EA draws a "Trendline by Angle" on the indicator. This is done every 5min. The chart on the foreground works perfectly. But after the first 5min, on the background charts the line is not in place and shows false values.

Is there a way to go around this, To refresh all of the background charts?

Reason: