//map of values
VectorMap<String, Value> m;

//reading variables
for ...reading loop... {
  String var_name = read...
  Value var_value = read...
  m.Add( var_name, var_value );
}

//using variable
Value x = m.Get("the dynamic variable name");

//writing variables
for(int i = 0; i < m.GetCount(); i++) {
  write... m.GetKey(i)
  write... " = "
  write... m[i]
  write...end line or whatever you wish;
}

VectorMap<String, String> cfg = LoadIniFile("myapp.cfg");
String recentdir = cfg.Get("RECENTDIR", Null);
int id = ScanInt(cfg.Get("ID", Null));