A simple example, on one account we do
ShMem[0]:= 5; // Assigned the value 5 to the 0th element of the array.
On another account, print the value
Print(IntToStr(ShMem[0])); // Print 5, which was assigned to the script on the other
An array can contain other arrays \ lists:
if (ShMem[0] <> 0) then ShMem[0]:= Integer(TStringList.Create);
TStringList(ShMem[0]).Add('new string');
print(TStringList(ShMem[0])[0]);