recording the MACD signal value when RSI(2) is greater than 90

[nsd]

Do I need to create an array if I want to record the MACD signal value each time RSI(2) goes above 90 or below 10?

[Carl Schreiber]

You have to make up your mind:

1) Array-size? 2) record every tick or every bar? 2) which value(s) MACD? .....