[iNils]

Можно написать функцию
array2D = function (array1D, arg1, arg2, value) {
if (!array1D[arg1]) {
array1D[arg1] = [];
}
array1D[arg1][arg2] = value;
};
char = [];
array2D (char, "res", "fire", 5);
array2D (char, "res", "water", 10);
q = char["res"]["fire"];
w = char["res"]["water"];
trace (q);
trace (w);