theres no error report but the input key won't perform the action it's supposed to,theres no error showing yet the key won't perform the desired action

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class LOCATION : MonoBehaviour {
public Transform position;

public string Source;
public string Conduit;
public string Implement;

private float Healthmax;
public float Health;
private float Staminamax;
public float Stamina;
private float Energymax;
public float Energy;

public float Ndegree;
public float Edegree;
public float Strength;
public float Chakra;
public float Spirit;
public float Speed;
public float Dexterity;
public float Reflex;
public float Intel;
public float Wits;
public float Mind;
public float Endure;
public float Resist;
public float Shell;
public float Power;

void Start()
{
    Vector3 pos = transform.position;
    transform.position = new Vector3(x: Ndegree + 150, y: Edegree + 250, z: 214);

    Power = Strength + Chakra + Spirit + Speed + Dexterity + Reflex + Intel + Wits + Mind + Endure + Resist + Shell;
    Health = (Endure * 10) + (Resist * 2) + (Chakra * 10);
    Stamina = (Dexterity * 10) + (Chakra * 2) + (Resist * 2);
    Energy = (Spirit * 10) + (Mind * 5);
    
}

void Fixedupdate ()
{
    if (Input.GetKey("a"))
    {
        Health= (Endure * 10) + (Resist * 2) + (Chakra * 10);
        Staminamax = (Dexterity * 10) + (Chakra * 2) + (Resist * 2);
        Energymax = (Spirit * 10) + (Mind * 5);
    }
    
}

}

PS: the bottom health is supposed to be HealthMax but for debuging purposes…
also this program is defining about 50 other character stats, though i don’t know if that’s the issue since the Update part won’t even return a debug.log text to me.

Two main issues here. First of all “Fixedupdate” is not the same as “FixedUpdate” (your “U” is lower case).

The second issue is that you shouldn’t use FixedUpdate in the first place. FixedUpdate is only relevant for continues forces / changes related to the phyiscs system. For anything else, especially reading input, you should use Update()