Script compiles but doesn't work?

integer channel = 0;

default {
    state_entry() {
        llRequestPermissions(llGetOwner(),PERMISSION_TRACK_CAMERA);
    }
    run_time_permissions(integer perm) {
        if (perm & PERMISSION_TRACK_CAMERA) {
            state camera_captured;
        }
    }
}

state camera_captured {
    state_entry() {
        llListen(channel,"",llGetOwner(),"");
        llSetStatus(STATUS_PHYSICS,TRUE);
        llSetTimerEvent(0.1);
    }
    timer() {
        llMoveToTarget(llGetCameraPos()+< 0.0,0.0,-1.5>,0.1);
    }
    listen(integer channel, string name, key id, string message) {
        if (llToLower(message) == "hold") {
            state camera_captured_disabled;
        }
    }
}

state camera_captured_disabled {
    state_entry() {
        llListen(channel,"",llGetOwner(),"");
        llSetStatus(STATUS_PHYSICS,FALSE);
    }
    listen(integer channel, string name, key id, string message) {
        if (llToLower(message) == "follow") {
            state camera_captured;
        }
    }

 on_rez(integer start_param)
    {
        llResetScript();
    } 
}