I want to use multiple wallet address in ton chain network.

In Tact By example, There is map in tact instead of array.

So I made such code in blueprint.

message Withdraw {
    address: map<Int as uint16, Address>;
    amount: map<Int as uint16, Int>;
    length: Int as uint16 = 0;
}

But I don’t know how to use this map in ts code.

1. How to use array in tact blueprint?

2. How to know length of map in tact?

TNK in advance.