To turn on Assembler support for a CICS-enabled enterprise server:
               
            
            
            
               
               - On the Enterprise Servers Administration page, click 
                  Edit in the row for the server for which you want to enable Assembler support.
                  
               
- Select the 
                  General tab and type the following in the 
                  Configuration Information section:
                  [ES-Environment]
ES_MFASM_SUPPORT=Y 
- Click 
                  Apply and then 
                  OK.