I did what you told me. I made two movie clips with instance name of "health" and "Hurdle"(Hurdle is also the name at the Library)
Then I changed the name of the codes to jump_btn and pause_btn because that is the instance name of my two buttons.

When i test movie, it has errors.

Scene 1, Layer 'as3', Frame 1, Line 10 1046: Type was not found or was not a compile-time constant: Hurdle.


Scene 1, Layer 'as3', Frame 1, Line 71 1067: Implicit coercion of a value of type flash.display:MovieClip to an unrelated type Class.

Scene 1, Layer 'as3', Frame 1, Line 94 1180: Call to a possibly undefined method Hurdle.