Here is the code where the server send the 4 arrays to the clients:

send_var(OwnRT1); //sending the 4 Arrays
send_var(OwnRT2);
send_var(OwnRT3);
send_var(OwnRT4);
wait(20);
OwnSetted = 1; //Saying that the Arrays was sent.
send_var(OwnSetted);

and here is the code, where the client disposes the array:

while(OwnSetted == 0) wait(1); //waiting for the "Saying"
SetArrayInMain(1); //set the arrays in the main array (surely errorless)
SetArrayInMain(2);
SetArrayInMain(3);
SetArrayInMain(4);

I tested it with many ways and discovered that the arriving OwnRT-Arrays have only 0,0,0,0,etc.. So they have the same worth as before.