in game: getting upgrades based on points?

For my game I'd like to be able to upgrade my actor based on score. For example my actor walks for now and can upgrade to riding a bike, and then a car, etc.. Is this fairly simple in GS? I pose the question because I am still learning GS.
Thanks!
Thanks!
Comments
Rule
When game.status=0
----Put all walking behaviors here
Rule
When game.status=1
----Put all running behaviors here
Rule
When game.status=2
----Put all riding behaviors here
Then have a rule that says
Rule
When game.score<10 or whatever
Change attribute game.status to 0
Rule ALL
when game.score≥10
when game.score<20 or whatever
change attribute game.status to 1
etc.
good luck!
This is great info! Doing it this way I could set it up like in PvsZ that when you hit a certain score I could spawn an image of what the upgrade will be ( a bike for example). Then the game can launch the game level that has my guy on a bike. This sound correct?
Thanks!