Slider.setValueRange Method
        
 Sets the valueFirst and valueSecond properties to new values
 at the same time to prevent multiple events and prevent one value from unnecessarily restricting
 the effective value of the other.
 
         
        Parameters
        
            - valueFirst
            
 
            - 
                
Type: Number 
            - valueSecond
            
 
            - 
                
Type: Number - May be null