Modify Existing MTF Indicator

Hi

I have my own Mt5 custom indicator that takes a 10 min, 5min and 3min wave and averages those and can be placed on any timeframe.

The problem when placed on a 1min timeframe I end up with a staircase effect.

The resson this happens I have been told is this

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The reason is when plotted to lower TF, the M5 CI using M5 data not using M1 data, e.g with M5 candle bar at 00:00:00 : the M5 open is the M1 open at 00:00:00, the M5 close is the M1 close at 00:04:00, and the high-low M5 is the hig-low between M1 00:00:00 and 00:04:00.

if your M5 CI use close price that mean -in other words - it only uses M1 data of 00:04:00. You have to re-write the whole CI of that M5 and use M1 data and hope fully it will meet your expectation. 

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Can anybody do this? 

My understanding is that the indicator would need to take say 10min data, minute by minute and so the 5 and 3 and average them?