error cs0131

hello, I m making a fps game. but it said error cs0131 the left hand side of an assignment must be a cariabe, a property or an indexer
here is my code

 using UnityEngine;
    using System.Collections;
    public class player : MonoBehaviour {
    	public float movementspeeds= 5.00f;
    	// Use this for initialization
    	void Start () {
    	// Update is called once per frame
    	void Update () {
    	float forwardSpeed= Input.GetAxis("Vertical")=movementspeeds;	
         Vector3 speed = new Vector3 (0, 0, forwardSpeed ); 
    	CharacterController cc = GetComponent<CharacterController>(); 
    		cc.SimpleMove( speed ); 

can anyone teach me how to fix it? thankyou very much

In the future, please include a copy of the error from the console. It will have the line number and other information that will help spot the problem. Your issue is on line 16. You have a ‘=’ sign where you need a ‘*’. It should be:

float forwardSpeed = Input.GetAxis("Vertical") * movementspeeds;