Question Not able to move a Rigidbody2D using the Input System

I am trying to create a character controller for a 2D platformer (I am handling the inputs with the "new" input system.)

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.InputSystem;
3.  
4. public class LBMovement : MonoBehaviour
5. {
6.     public InputManager controls;
7.     Rigidbody2D LBRigidbody;
8.     public float jumpHeight = 5f;
9.     public float walkSpeed = 5f;
10.  
11.     private void Awake()
12.     {
13.         LBRigidbody = GetComponent<Rigidbody2D>();
14.         controls = new InputManager();
15.  
16.         controls.Player.LittleBJump.performed += Jump;
17.     }
18.  
19.     private void FixedUpdate()
20.     {
21.         Vector2 direction = controls.Player.LittleBMovement.ReadValue<Vector2>();
22.         float directionX = direction.x;
23.    
24.         LBRigidbody.velocity = new Vector2(directionX, 0f) * walkSpeed;
25.     }
26.  
27.     private void Jump(InputAction.CallbackContext context)
28.     {
29.         if (context.performed)
30.         {
31.             Debug.Log("Jump");
32.  
33.             LBRigidbody.velocity = new Vector2(0f, jumpHeight);
34.         }
35.        
36.     }
37.  
38.     private void OnEnable()
39.     {
40.         controls.Enable();
41.     }
42.  
43.     private void OnDisable()
44.     {
45.         controls.Disable();
46.     }
47. }

I managed to make it so that when you press the right or left arrow keys, the player moves accordingly. However, when I press the up arrow key, it prints a message saying "Jump," but it doesn't actually jump. I tried messing with the Rigidbody's gravity and the mass, as well as the jumpHeight variable, in case it was an issue of the force not being large enough, but nothing seemed to work.
Since it prints the message, I know that it is executing the function, but its not moving the Rigidbody like it's supposed to. I already tried using AddForce instead of velocity, but it didn't do anything either. Does anyone know how I might fix this? Its probably super simple, but this is my first game. Thanks!

(Oh, and on a side note, I noticed that when I started using velocity instead of AddForce, the Player started falling super slowly. I was able to fix this by increasing the gravity scale, but I'm worried that might have other unforeseen consequences. Is there any other way I can fix that?)

 

Never mind I fixed it!