How can I plot an indicator with a condition that RSI must be greater than x but less than y in pine script?

Question

I want to plot an indicator with an rsi value from 52 to 80 only but whenever I put a range format below:

rsiup = 50 < rsi < 80
rsidown = 30 < rsi < 50

then I get this error:

Cannot call 'operator <' with argument 'expr0'='call 'operator <' (series bool)'. An argument of 'series bool' type was used but a 'const float' is expected

Please help

Answer 1

You need to break it down into two and conditions.

rsiup = (50 < rsi) and (rsi < 80)
rsidown = (30 < rsi) and (rsi < 50)