How an alert decides it has triggered, compared against the price step
(prevClose → newClose) of a realtime tick:
crossing — the price moved across the level in EITHER direction
(i.e. prev and new sit on opposite sides of price, or new
lands exactly on it). The "alert when price touches this level" mode.
above — fires only on an upward break: prev < price && new >= price.
below — fires only on a downward break: prev > price && new <= price.
How an alert decides it has triggered, compared against the price step
(prevClose → newClose)of a realtime tick:crossing— the price moved across the level in EITHER direction (i.e.prevandnewsit on opposite sides ofprice, ornewlands exactly on it). The "alert when price touches this level" mode.above— fires only on an upward break:prev < price && new >= price.below— fires only on a downward break:prev > price && new <= price.