Adventure Game Studio

I want to change the dialog text option once the player chose. It's possible?

No, but all you need to do is create both options and uncheck "Show" for the second one, then after the first one is chosen, remove the 1st and turn on the 2nd.

Thanks Khris, i saw the option-on and option-off. Is very simple :)

Other question.
Can i do something like this in Dialog?
  if(bool==true){
option-on 3
  }

I try show option 3 if bool=true. But it doesn't work.

Edit: Solved :)