Call invocation

CALL ISPLINK('LMPRINT ',DDVAR,' ',' ','NO      ');

OR
 
Set the program variable BUFFER to contain:
BUFFER = 'LMPRINT DATAID(&DDVAR) FORMAT(NO)';
Set the program variable BUFLEN to the length of the variable BUFFER. Issue the command:
CALL ISPEXEC (BUFLEN, BUFFER);