Access a variable from another Script inside IF

Questions & Answers
1

Hey guys, how can I access a variable from another Script inside IF ?

I accessed a float variable on another script, and changed it, but I want to limit the value on this script, this is my script:

 if (Input.GetKey(KeyCode.D) && apertou == true)
            {
                float water = GameObject.FindWithTag("Boia").GetComponent<Floater>().waterLevel += Time.deltaTime;
     if (Input.GetKey(KeyCode.D) && apertou == true)
                {           
                    float water = GameObject.FindWithTag("Boia").GetComponent<Floater>().waterLevel += Time.deltaTime;
                }
      if ( water >= 6806 (or the right code to limit the variable waterLevel))
                    {
                        Debug.Log("go");
                    }
2

Hi,
Its not actually possible to access a variable that is created under a function
Because Unity only checks the variables that are created outside a function

Eg
1 Using Variables outside the function(void , if , else …etc)
Add both the script to the same objectRight Working Method

using UnityEngine;
using System.Collections;

public class Test : MonoBehaviour {
public float x= 0;
public float y = 0;

void Update(){
if(Input.GetKeyDown(KeyCode.A)){
x++;//same as x+=1 ie adds  1 to the current number

}

if(Input.GetKeyDown(KeyCode.B)){
y++;
}
}

}

Getting value from other script an printing it

using UnityEngine;
using System.Collections;

public class ValueObtainer : MonoBehaviour {
void Update(){
float xvalue = transform.GetComponent(Test).x;
print(x);//or y your wish 

}

}

now the same script with x and y variables inside the function
Wrong method ,doesnot work

using UnityEngine;
    using System.Collections;
    
    public class Test : MonoBehaviour {
  
    
    void Update(){
    if(Input.GetKeyDown(KeyCode.A)){

 flaot x+=1;//same as x+=1 ie adds  1 to the current number
    
    }
    
    if(Input.GetKeyDown(KeyCode.B)){
  
float y+=1;
    }
    }
    
    }

Getting value from other script an printing it

    
    using UnityEngine;
    using System.Collections;
    
    public class ValueObtainer : MonoBehaviour {
    void Update(){
    float xvalue = transform.GetComponent(Test).x;
    print(x);//or y your wish 
    
    }
    
    }

Here,since x and y values are inside a function,in this case "void and if"functions
Unity returns value null