Your code is incorrect.

Comparison operator applied on Matrices returns a MATRIX because it operates item-wise (item by item) and result of comparison is the MATRIX that gives 1 when given (n,k) item is the same or 0 otherwise.

```
// comparison of matrices results in a matrix!
item_wise_equality = testMX_001 == testMX_002;
// comparison of matrices results in a matrix!
item_wise_inequality = testMX_001 != testMX_002;
printf("%s", MxToString( item_wise_equality ) );
printf("%s", MxToString( item_wise_inequality ) );
```

Then **if() clause applied on entire matrix just checks if matrix exists (and it is not Null).**

Both "item by item" equality and inequality matrices EXIST (and they are not Null). Note that Null in AFL is not zero.

**Use the DEBUGGER** you would see the values

To get better understanding of what is happening in your code and how functions work, use advice given here: How do I debug my formula?

You could use the code like this to do what you wanted:

```
if( MxSum( testMX_001 != testMX_002 ) == 0 )
{
equal = True;
}
```

This will work because MxSum returns a **scalar value** representing sum of all matrix items. If the above sum is zero it means that inequality check for all elements was false, so all elements have equal value.

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