Yes, you can add indicators to chart from mql5 script. It's only available in mql5. Use this function-> ChartIndicatorAdd
ChartIndicatorAdd()
Why write and use a script? Just add them to the chart, and you are done.
Rupras Metkar : I want to Draw 3 EMAs using only one mql script, is it possible ? pls guide if any one has any leads
You can see an example of the indicator [data folder] \ MQL5 \ Indicators \ Examples \ Alligator.mq5 - one indicator draws three graphical plots.
@Christian Linden #: Because this doesn't work in the tester.
Scripts can't be used in the Strategy Tester either, so why wake up an old thread for such an irrelevant comment?

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I want to Draw 3 EMAs using only one mql script, is it possible ?
pls guide if any one has any leads
thanks
RSm