Example: lr.advance_param

The following example tracks a parameter, Stock, and sends three of its values to the output.

lr.output_message("Track Stock: " + lr.eval_string("{Stock}"));
for(int index=0; index<3; index++){
  int j = lr.advance_param("Stock");
  lr.output_message("Track Stock: " + lr.eval_string("{Stock}"));
}