While using "Security" function for Higher Time Frames (htf) you must accept "Repainting" issue or better you must use previous day data such "security(syminfo.tickerid, 'D', close, lookahead=barmerge.lookahead_on)" that's best normally (or barmerge.lookahead_off). But the problem is (as you can see) it uses previous day data, and this causes latency.
So how to draw LIVE and NON-REPAINTING HTF moving averages?
Until the last candle of higher time frame all is fine and no repaint issue. when it came to last candle of HTF and if we use real data, (because of we can not know the future) while price is changing it starts drawing on each candle of current period without correcting old ones (this is repaint issue). it needs to calculate number of curent time frame candles for higher time frame and must change all points in that period as you can see in the video below.
We have "50 lines" limitation in current Pine version. we hope to have unlimited lines in next versions.
This work is completely experimetal.
btw Thanks to all Pine Platform Developers, They are doing very good job!
Better to watch following video to see how they look like:
P.S. There is no check for Higher time frame, so you should set time frame for HTF accordingly in the options.