Using the OR controlling block
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Is this the correct way to implement?

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No. Or blocks are to be used 'horizontally', not 'vertically', as in your image. The way it is used now is acting as an AND block.
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Thanks @l-andorrà
Understood, but the blocks seem to only connect vertically? Would it look like :
IF TRADE ONCE PER BAR OR / \condition condition
close close -
Yes, the connect vertically only, but you can create as many 'horizontal' tree blocks as you need.