Expand ENUM_TIMEFRAMES predefined timeframes PERIOD

Expand ENUM_TIMEFRAMES predefined timeframes PERIOD

I would like Metatrader 5 to behave like it can handle custom time frame.

I don’t think this can be done without a native MT5 update by MetaQuotes

but maybe you know how?

I would like ENUM_TIMEFRAMES to include custom PERIOD

https://www.mql5.com/en/docs/constants/chartconstants/enum_timeframes

i.e.

PERIOD_T1 (1 Tick)

PERIOD_T5 (5 Tick)

PERIOD_S1 (1 Second)

PERIOD_S5 (5 Second)

etc.

You get the idea.

My goal is to be able to use any PERIOD in any Indicators in an EA to do Multi-Instrument Real-Time-Trading as well as in Strategy Tester's backtesting.

For example, with an EA like the code below, the ENUM_TIMEFRAMES could be any PERIOD.

(I use the indicator RSI, PERIOD_T1 and PERIOD_S1 just for illustration but it could be any indicator or period.)

i.e.

double RSI1[];
int EURUSD_handle = 0; 

double RSI2[];
int GBPUSD_handle = 0; 
...
EURUSD_handle=iRSI(EURUSD,PERIOD_T1,ma_period,applied_price); 
GBPUSD_handle=iRSI(GBPUSD,PERIOD_S1,ma_period,applied_price); 
...
if         
(     
            (RSI1[0] < 70)
         && (RSI2[0] > 30)  
)