DC motor and Servo

Hello everyone, Im using an L298n to control one dc-motor and Im setting the arduino UNO pin 9 as PWM just how the documentation indicates. 

```
this.pinMode(9, five.Pin.PWM);
```

Everything works great until I declare a servo 

```
servo = new five.Servo(11);
```

After that the pin9 doesnt seems to be working as PWM and only enable the motor at 255 value.

Any help would be apreciate.
Thanks
