Make sure in your 'default value' for any Text variable, you aren't using quotes... Something along those lines anyway. Generally some places you need quotes, others you don't. Check them all.
Edit: I changed from using Text to Number in one place for this reason. I recommend using Number, and have constant variables to denote different 'states' or whatever, like MONSTER_ATTACKING = 1, MONSTER_DEFENDING = 2, etc.