Maybe I did not understood the question before...
To close trades at any time, use "Close trades" block. Of course, this block should not run all the time, so you can use some Condition or something else BEFORE. There is no any reason to have Condition blocks at the end, because blocks run one after another.
So, if RSI > 30 => Close trades. If this is what you want...
RSI has values between 0 and 100. I don't think that this indicator can be used for Trailing stop. You can use any indicator that has values like Moving average (price values), but from 0 to 100... why...