@stre1026 FBOS has a series of internal “registers”. When you read a pin, the value of the reading is cached until the device reboots or a new reading is performed on the same pin number. Since the pin value is cached, you can read the pin once in one sequence, then re-read the same value inside the IF statement of a completely different sequence. The old value will still be used in the second sequence.
Does that help?