Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
And what did you tried? What is the actual step that you can't understand?
Block "Condition", section "Candle data", use "Candle ID" parameter to choose the candle. Candle with id 0 is the current one, 1 is the previous one, 2 is the next oldest candle and so on...