Sorry, I am wrong. What I actually backtested was running an EA with an indicator of multiple TF.

```
int OnCalculate(const int rates_total,
const int prev_calculated,
const datetime &time[],
const double &open[],
const double &high[],
const double &low[],
const double &close[],
const long &tick_volume[],
const long &volume[],
const int &spread[])
{
//---
static datetime lastbar=0;
if(Time[0]!=lastbar)
{
Comment("\nM5 = ",iHigh(_Symbol,PERIOD_M5,0)," ; M15 = ",iHigh(_Symbol,PERIOD_M15,0)," ; H1 = ",iHigh(_Symbol,PERIOD_H1,0)," ; H4 = ",iHigh(_Symbol,PERIOD_H4,0)," ; D1 = ",iHigh(_Symbol,PERIOD_D1,0)," ; W1 = ",iHigh(_Symbol,PERIOD_W1,0));
Print("M5 = ",iHigh(_Symbol,PERIOD_M5,0)," ; M15 = ",iHigh(_Symbol,PERIOD_M15,0)," ; H1 = ",iHigh(_Symbol,PERIOD_H1,0)," ; H4 = ",iHigh(_Symbol,PERIOD_H4,0)," ; D1 = ",iHigh(_Symbol,PERIOD_D1,0)," ; W1 = ",iHigh(_Symbol,PERIOD_W1,0));
lastbar=Time[0];
}
//--- return value of prev_calculated for next call
return(rates_total);
}
```

And the result is :

```
2017.04.09 18:31:57.853 2017.04.07 10:00:00 coba Indicator GBPUSD,H1: M5 = 1.244 ; M15 = 1.244 ; H1 = 1.2464 ; H4 = 1.2477 ; D1 = 1.2494 ; W1 = 1.2555
2017.04.09 18:31:58.213 2017.04.07 11:00:00 coba Indicator GBPUSD,H1: M5 = 1.244 ; M15 = 1.244 ; H1 = 1.2459 ; H4 = 1.2477 ; D1 = 1.2494 ; W1 = 1.2555
2017.04.09 18:31:58.540 2017.04.07 12:00:00 coba Indicator GBPUSD,H1: M5 = 1.244 ; M15 = 1.244 ; H1 = 1.2434 ; H4 = 1.2477 ; D1 = 1.2494 ; W1 = 1.2555
2017.04.09 18:31:58.899 2017.04.07 13:00:00 coba Indicator GBPUSD,H1: M5 = 1.244 ; M15 = 1.244 ; H1 = 1.2429 ; H4 = 1.2477 ; D1 = 1.2494 ; W1 = 1.2555
2017.04.09 18:31:59.164 2017.04.07 14:00:00 coba Indicator GBPUSD,H1: M5 = 1.244 ; M15 = 1.244 ; H1 = 1.2424 ; H4 = 1.2477 ; D1 = 1.2494 ; W1 = 1.2555
2017.04.09 18:31:59.461 2017.04.07 15:00:00 coba Indicator GBPUSD,H1: M5 = 1.244 ; M15 = 1.244 ; H1 = 1.2418 ; H4 = 1.2477 ; D1 = 1.2494 ; W1 = 1.2555
2017.04.09 18:32:00.406 2017.04.07 16:00:00 coba Indicator GBPUSD,H1: M5 = 1.244 ; M15 = 1.244 ; H1 = 1.24 ; H4 = 1.2477 ; D1 = 1.2494 ; W1 = 1.2555
2017.04.09 18:32:00.920 2017.04.07 17:00:00 coba Indicator GBPUSD,H1: M5 = 1.244 ; M15 = 1.244 ; H1 = 1.2391 ; H4 = 1.2477 ; D1 = 1.2494 ; W1 = 1.2555
2017.04.09 18:32:01.201 2017.04.07 18:00:00 coba Indicator GBPUSD,H1: M5 = 1.244 ; M15 = 1.244 ; H1 = 1.239 ; H4 = 1.2477 ; D1 = 1.2494 ; W1 = 1.2555
2017.04.09 18:32:01.498 2017.04.07 19:00:00 coba Indicator GBPUSD,H1: M5 = 1.244 ; M15 = 1.244 ; H1 = 1.2396 ; H4 = 1.2477 ; D1 = 1.2494 ; W1 = 1.2555
2017.04.09 18:32:01.654 2017.04.07 20:00:00 coba Indicator GBPUSD,H1: M5 = 1.244 ; M15 = 1.244 ; H1 = 1.2383 ; H4 = 1.2477 ; D1 = 1.2494 ; W1 = 1.2555
2017.04.09 18:32:01.825 2017.04.07 21:00:00 coba Indicator GBPUSD,H1: M5 = 1.244 ; M15 = 1.244 ; H1 = 1.2376 ; H4 = 1.2477 ; D1 = 1.2494 ; W1 = 1.2555
2017.04.09 18:32:01.997 2017.04.07 22:00:00 coba Indicator GBPUSD,H1: M5 = 1.244 ; M15 = 1.244 ; H1 = 1.2379 ; H4 = 1.2477 ; D1 = 1.2494 ; W1 = 1.2555
2017.04.09 18:32:02.106 2017.04.07 23:00:00 coba Indicator GBPUSD,H1: M5 = 1.244 ; M15 = 1.244 ; H1 = 1.2371 ; H4 = 1.2477 ; D1 = 1.2494 ; W1 = 1.2555
```