Draw chart from text file in MQL4

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I'm new to MQL and MetaTrader 4, but I want to read a CSV file and draw the values I've got into the chart of the Expert Advisor I'm working on.
Every file has the form:
;EURUSD;1
DATE;TIME;HIGH;LOW;CLOSE;OPEN;VOLUME
2014.06.11;19:11:00;1.35272;1.35271;1.35271;1.35272;4
2014.06.11;19:14:00;1.35287;1.35282;1.35284;1.35283;30
Where the EURUSD part is the Symbol which another program generated, the 1 is the period, and all the other things are the data to draw.
Is there any form to do it inside an Expert Advisor, or do I need to use a Custom Indicator? If that's the case, how can I do it in the simplest way?
P.S.: I read the data in a struct:
struct entry
{
  string date;
  string time;
  double high;
  double low;
  double close;
  double open;
  int volume;
};
Thanks in advance.
 
By my thoughts the simplest way for me would be to copy them in array rates than to use Heiken Ashi as template as indicator, but I do not know method if IndicatorCounted() would work. Manually you would need to update the array by additional code if you have new updates.
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