Problem with 2d character controller

Hi. I'm making a basic character controller to move the character along the y axis with the Vertical input. My script is

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class PlayerMove : MonoBehaviour {
5.  
6.     public float maxSpeed = 2;
7.  
8.     // Use this for initialization
9.     void Start () {
10.  
11.     }
12.  
13.     // Update is called once per frame
14.     void Update () {
15.     //Returns a float from -1 to +1
16.         Vector3 pos = transform.position ;
17.         pos.y += Input.GetAxis ("Vertical") * maxSpeed * Time.deltaTime;
18.         transform.position = pos * maxSpeed;
19.      
20.      
21.      
22.      
23.     }
24. }

when variable maxSpeed = 1 the controller works perfectly. But when the maxSpeed is anything over one it doesn't work and I get this error message:

transform.position assign attempt for 'Orange_Box64x64' is not valid. Input position is { -Infinity, -38391908889837727000000000000000000000.000000, 0.000000 }.
UnityEngine.Transform:set_position(Vector3)
PlayerMove:Update() (at Assets/PlayerMove.cs:18)

As a newby in unity this has me utterly befuddled. Hoping a more experienced scriptor can help!

one more question: How can i move the character along the x axis as well without using transform.position (it is already declared so can not be used again)

 

Any reason why you are multiplying pos by maxspeed? Try this instead

Code (CSharp):

1. void Update () {
2.         Vector3 pos = transform.position ;
3.         pos.y += Input.GetAxis ("Vertical") * maxSpeed * Time.deltaTime;
4.         transform.position = pos;
5. }

Adding in horizontal movement is trivial

Code (CSharp):

1. void Update () {
2.         Vector3 pos = transform.position ;
3.         pos.x += Input.GetAxis ("Horizontall") * maxSpeed * Time.deltaTime;
4.         pos.y += Input.GetAxis ("Vertical") * maxSpeed * Time.deltaTime;
5.         transform.position = pos;
6. }

 

Ok thanks. Dont have a chance to get on my computer right now but code looks like it will work!
Thanks