Unity does not serialize two-dimensional rectangular arrays (T[,]). Use SaintsArray2DR<T> when you need an editable rectangular array on a regular Unity-serialized field.

The inspector draws the value as a grid. Use the W and H controls to change its column and row counts.

SaintsArray2DR<T> converts implicitly to and from T[,].

Use [SaintsArray2DR] change settings:

• bool transpose: when true, for T[a, b], use a as height (row) and b as width (col)

using SaintsField;

public SaintsArray2DR<bool> array2Dr;

// reverse x, y direction
[SaintsArray2DR(transpose: true)]
public SaintsArray2DR<bool> array2DrRev;

private void Awake()
{
    bool[,] to2D = array2Dr;  // convert to
    SaintsArray2DR<bool> from2D = array2DrRev;  // convert from
}

It works with ShowInInspector & Button

[ShowInInspector]
private bool[,] ShowArray2DSerialized
{
    get => array2DSerialized;
    set => array2DSerialized = value;
}