Let’s start by taking a look at the US Dollar Index intraday chart with our directional tool from the start of the session (5 pm EST which is 15:00 in my time zone):

Note that the direction was up early, and then we broke to downward direction when we crossed the midpoint at A and never went back. Note also how specifically it failed at B and C, both of which would have flipped back to positive direction if it had gone above the line.
Unfortunately, our trade on the GBPUSD barely stopped before what would have been a nice winner. See that section below.
Triggered long at A after setting the trigger perfectly, and unfortunately, stopped at B on that little spike down under the Pivot, which then reversed and the trade worked great to C and beyond: