Most traders have deleted a broken support line at least once, then watched price stop dead at it a week later. This case follows that kind of zone through one full cycle on a generic chart: no ticker, no prices, just the order in which things happen, one closed bar at a time. The mechanism behind the flip is covered in when support becomes resistance; this article is about watching one breaker block be born, get tested and earn its new role.

1. The block nobody drew

It starts in an uptrend. A candle closes above the last swing high, a break of structure. Edo Swing Levels reads the bias as Bullish: the last confirmed swing low is the Strong Low, a solid teal line, and the high above is Weak. On that same close, Edo Breaker Blocks looks back up to 20 bars, the default Impulse Lookback, for the last bearish candle before the break, the order block that launched the move, and stores its range from high to low as a candidate. It draws nothing. In this case that candle sits partway up the leg, above the Strong Low, and that detail decides everything that follows.

2. The close that flipped it

The rally stalls and price rolls over. Wicks into the candidate's range change nothing. Then a candle closes below that candle's low, and on that close the zone appears: a red box over the original candle's range, starting at that candle and extended to the right, labelled Bear Breaker, in the Active state with a thin border. The Bearish Breaker formed alert fires and the Bear Breakers row of the panel goes up by one. The support that launched the rally has been lost on a close, and from now on the indicator treats it as resistance. Same candle, opposite job: that is the whole difference between an order block and a breaker block.

3. Two readings that don't match yet

Swing Levels has not moved. The bias is still Bullish and the Strong Low is still the solid line below price, because the close that created the breaker happened above it. That is not a contradiction, it is two different questions. The breaker says a zone has changed sides; the Strong Low says the trend that zone belonged to is not over. One level defends the trend, and here it is still defending. A breaker can form inside an intact trend, and the trend can hold. Had the candidate been the candle of the swing low itself, both tools would have flipped on the same close.

4. The retest

Price bounces back up into the box. The first closed candle whose high reaches the bottom of the zone without closing above its top turns the breaker Tested: the border thickens and the Breaker Tested alert fires. Read that state precisely. It does not require a rejection candle, and a close inside the box counts as a test too. What it certifies is that price came back and did not close through. The closes that follow carry the rest of the story, and here they turn lower: the bounce ends inside the old demand block, which is now doing the opposite job.

5. When the structure caught up

The drop that follows closes below the Strong Low. That is the change of character: Swing Levels flips the bias to Bearish, the Strong Low taken alert fires and the roles swap. The broken low stays on the chart as a dashed Weak Low until a new swing low is confirmed, and the high level becomes the Strong High. Which high depends on timing. The top of the retest only counts as a swing once ten bars have closed on each side of it on the default Swing profile; until then the Strong High is the old rally top. Once it is confirmed, the solid red line moves down to it, in or just above the Bear Breaker. The two tools now point at the same place and share the same invalidation: a close above the top of the box turns the breaker Failed, and a close above the Strong High would flip the bias back.

Does a breaker block change the trend in Edo Swing Levels?
No. On the same profile both indicators find swings and breaks the same way, but they watch different prices. The breaker forms on a close below the order block's low; the bias in Swing Levels only turns on a close through the Strong level, which in an uptrend is the last confirmed swing low. When the order block sits above that low, the breaker comes first and the change of character later, if it comes at all. When the order block is the candle of the swing low itself, both can happen on the same close.
What counts as a test of a Bear Breaker?
A closed candle whose high reaches the bottom of the zone and whose close stays at or below its top. It can only happen after the bar that formed the breaker, and only once: an Active breaker becomes Tested, and a Tested breaker can still fail later. Because a close inside the box also counts, the state tells you that price came back and did not close through, not how strongly it was rejected.
What happens to the breaker if price closes above it?
It turns Failed: the box becomes dashed and faded, stops extending to the right and drops out of the panel count. That can happen from Active or from Tested. A failed breaker is not a signal on its own; it means the zone no longer defends anything. Only if that same close also clears the Strong High does Swing Levels flip the bias back to Bullish.