What does "for your help" mean in English for Spanish?

In English for Spanish, "for your help" means:

por su ayuda

Listen to "for your help": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a phrase that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 3, Level 3, Scene 9