Infinite menu PLEASE HELP!

:puzzled: I’m using Flash MX Pro (7.2) and I am trying to complete the Infinite menu tutorial. When I enter he first bit of code and try to test the scene, it doesn’t work and I get the following output error:

Error Scene=Scene 1, layer=Layer 1, frame=1:Line 3: Syntax error.
***xcenter=150;

Error Scene=Scene 1, layer=Layer 1, frame=1:Line 4: Syntax error.
***speed=1/10;

Total ActionScript Errors: 2 Reported Errors: 2

Any help would be greatly appreciated! Thanks!