Continuity mistake: After arriving at 5 Pointz, someone tries to find the combination for the safe and it is revealed to have had a green handkerchief attached to the rear end. Dylan then pulls on the handkerchief and keeps pulling on it to reveal more coloured handkerchiefs until it stops and a timer is heard ticking. When the clicking sound is heard, Dylan is shown holding onto the knot between a purple handkerchief and a blue handkerchief. The shot then cuts to Agent Cowan saying "What is this?", but when the shot cuts back to Dylan, he is suddenly holding the knot between a blue handkerchief and a yellow handkerchief. Then in the next shot, his entire hand is held onto the blue handkerchief.
Picture added by Casual Person