Conditional Keyword in JSON

                "type" : "basic_attack",
                "params" : {
                    "desc" : {
                            "dmg3": "damage"
                     },
                    "user" : "user",
                    "damage" : 10,
                    "target" : "action_target"
                },
                "cond" : [
                    {
                        "code" : "user.get_health() > action_target.get_health()",
                        "desc" : "your health is greater than target's health"
                    }
                ]
            },