What is the code for ' BUY or SELL if price moves upwards or downwards by 50 paise or one rupee'?

Algos, strategies, code
1

If the price is 100 rupees and the change should be 50 paise. Depending on it I shall trade from renko and heikin ashi charts.

2

you can use price alert indicator, check the below code from Expert Advisor page