Making a MQL5 indicator with 2 buffers based on a complex strategy to plot buy and sell signals

Making MQL5 indicator which includes bollingerbands and rsi with bollinger bands in its source code bollingerbands period is 14 (sma) with dev 2 rsi with bollingerbands => rsi period is 14 and its bollingerbands is sma 14 with source of rsi 14 and dev2 heres is its source code https://www.mql5.com/en/code/28473 indicator price source is selectable and consist open , high, low, close , hl2 , hlc3, ohlc4, (o+c)/2 indicator should plot buffers , buy and sell signals as an arrow based on my own strategy using those indicator