https://stackoverflow.com/questions/30483780/how-to-convert-value-from-object-to-nullable

Type type2 = Nullable.GetUnderlyingType(key.Type);
if (key.Type.Name.Contains("Nullable"))
{
		newTypeRight = Convert.ChangeType(right, type2);
}
else
{
		newTypeRight = Convert.ChangeType(right, key.Type);
}