How to get last two days OHLC V data irrespective of chart timeframe.

I have selected hourly chart. But i want to get OHLC V data on daily basis in AFL calculation. How can it be done.
Can you please reditect to any link if it exist.

Please read about Multi Time Frame support in AmiBroker help.
As well as study further information/examples at Knowledge Base of AmiBroker.

i have gone through the multi time frame page but couldnot get hold of timeframe expand/compress.

I have a fundamental issue in the code. I want to populate 5 min VWAP last value to hourly/daily chart.
Following code has issue in BARSSINCE function in different time frame. Can you please assist.

Below is my code to calculate VWAP:

_N(Title = StrFormat("{{NAME}} - {{INTERVAL}} {{DATE}} Open %g, Hi %g, Lo %g, Close %g (%.1f%%) Vol " +WriteVal( V, 1.0 ) +" {{VALUES}}", O, H, L, C, SelectedValue( ROC( C, 1 )) ));
Plot( C, "Close", ParamColor("Color", colorDefault ), styleNoTitle | ParamStyle("Style") | GetPriceStyle() );


bars_filter=BarsSince( Day() != Ref(Day(), -1));
Bars_so_far_today = 1 +bars_filter ;
StartBar = ValueWhen(TimeNum() == 091500, BarIndex());
TodayVolume = Sum(V,Bars_so_far_today);
IIf (BarIndex() >= StartBar, VWAP = Sum (C * V, Bars_so_far_today ) / TodayVolume,0);
Plot (x1,"VWAP" +WriteVal(bars_filter),colorOrange, styleline);