What does Judges 16:9 mean?

She had men hiding in the room. She called out, 'Samson, the Philistines are here!' But he snapped the bowstrings as easily as a piece of string snaps when it touches fire. So the secret of his strength stayed hidden. Judges 16:9 - Modern Text Bible

(Samson easily breaks free, showing that he hasn’t told her the truth. The Philistines’ plan fails.)