How to perform 'Async Set Environment Variable' in SAS.
* Task: Async Set Environment Variable
* Language: SAS
%macro async_set_environment_variable()
* Implementation for Async Set Environment Variable
%let result = ...; * Initialize variable
* TODO: Implement core logic here
* Step 1: Prepare data
* Step 2: Process Async Set Environment Variable
%put("Done");
%mend;