Issue with varSpeedServo library

I have built a little robot that moves along an x and y axis with 2 servos, It is controlled with a thumbstick salvaged from an Xbox 360 controller. The code below allows it to work fine but it does not allow me to control the speed of the servos. If I understand correctly the .write() function is replaced with .slowmove() ie.
example

myServo1.write(servoVal);
// would be replaced with
myServo1.slowmove(50,servoVal);

but when I do that my servos lock to one direction and are no longer controllable with the thumbstick… any Idea what I am doing wrong? Here is my code. Ive commented out the slowmove.() functions

#include <VarSpeedServo.h>



const int servo1 = 5;       // first servo
const int servo2 = 7;       // second servo
const int joyH = 1;        // L/R Parallax Thumbstick
const int joyV = 2;        // U/D Parallax Thumbstick

int servoVal;           // variable to read the value from the analog pin

VarSpeedServo myservo1;  // create servo object to control a servo
VarSpeedServo myservo2;  // create servo object to control a servo



void setup() {

  // Servo  
  myservo1.attach(5,0,255);  // attaches the servo
  myservo2.attach(7,0,180);  // attaches the servo

  // Inizialize Serial
  Serial.begin(9600);
}


void loop(){

    // Display Joystick values using the serial monitor
    outputJoystick();

    // Read the horizontal joystick value  (value between 0 and 1023)
    servoVal = analogRead(joyH);          
    servoVal = map(servoVal, 0, 1023, 0, 180);     // scale it to use it with the servo (result  between 0 and 180)

    myservo2.write(servoVal);                         // sets the servo position according to the scaled value    
    //myservo2.slowmove(150,servoVal)
    // Read the horizontal joystick value  (value between 0 and 1023)
    servoVal = analogRead(joyV);           
    servoVal = map(servoVal, 0, 1023, 70, 180);     // scale it to use it with the servo (result between 70 and 180)

    myservo1.write(servoVal);                           // sets the servo position according to the scaled value
    //myservo2.slowmove(150,servoVal)
    delay(15);                                       // waits for the servo to get there

}


/**
* Display joystick values
*/
void outputJoystick(){

    Serial.print(analogRead(joyH));
    Serial.print ("---"); 
    Serial.print(analogRead(joyV));
    Serial.println ("----------------");
}

OMG After hours of struggling I figured it out right after I posted this, I accidently swapped the speed and position in the slowmove() function. it is supposed to be

myServo1.slowmove(servoVal, 50)// the 50 is the speed

well if you ever want a thumbstick controlled robot with variable speed this post might be relevant.

Just curious why 255 in the below line of code.

myservo1.attach(5,0,255);  // attaches the servo