what is wrong with my C# code?

Questions & Answers
1

i am trying to make my sliderjoint2d motor go left to its limits then right to its limits but i keep getting an error over “slider.motor” in “slider.motor.motorSpeed=1.5f;” telling me that I “Cannot modify the return value of ‘SliderJoint2D.motor’ because it is not a variable”

using UnityEngine;
using System.Collections;

public class SliderScr3 : MonoBehaviour
{
public SliderJoint2D slider;

// Use this for initialization
void Awake()
{

    slider = this.gameObject.GetComponent<SliderJoint2D>(); 
    
}
void Start () {
   
        if (slider.jointTranslation == -2)
        {

          slider.motor.motorSpeed=1.5f;//make motor go right for optional shooting

        }        
}
// Update is called once per frame
void Update () {

}

}

2

you have to store the motor. This means add a variable called " JointMotor2D"
Then you can change the value.

   if (slider.jointTranslation == -2)
         {
         JointMotor2D _motor =  slider.motor;
        _motor.motorSpeed=1.5f;   //make motor go right for optional shooting
 
         }