How do I change the logged text based on a momentary collision?

I’m exporting several pieces of information about the player in a game to a text file outside of unity using the script below. I want to constantly know the player’s x and z position, as well as their rotation so I can see where they’re facing in the environment. I also want to know when they make a specific type of error, which, in this case, is running into a wall. When they are not running into a wall, I want 0 to be printed, and when they have run into a wall, I want 1 to be printed. Everything prints out exactly how I want it to except for the wall error, which always prints 1. Here’s the script and if you have any idea why this is happening I would greatly appreciate some feedback. Thanks!

EDIT: I changed the if (wallError = false) to if(wallError == false) which constantly makes it print 0 instead of 1. I think this means the problem is in the OnCollisionEnter portion of the script, as this would result in wallError never being switched from false to true. Does anyone see a problem with that part of the script that could be causing the issue?

using UnityEngine;
using System.Collections;

public class Coordinates : MonoBehaviour {

	// Use this for initialization
	void Start () {
	
	}
private string xText;
private string zText;
private string rotText; 
private string errorText;
public static bool wallError = false;
	void FixedUpdate () {
		string path = @"/Desktop/museum/Log/coords";
			xText = "

" + transform.position.x;
zText = " , " + transform.position.z;
rotText = " , " + transform.rotation;
if (wallError = false)
errorText = " , 0 “;
else
errorText = " , 1 “;
System.IO.File.AppendAllText(path, System.String.Format(”{0}{1}{2}{3}”, xText, zText, rotText, errorText));

	}
	void OnCollisionEnter (Collider other) {
		if (other.name == "Catch Wall")
			wallError = true;
	}
}

if (wallError = false)

need to be:

 if (wallError == false)