purging AQ tables

We are following How To Purge Fnd_AQ Tables (Doc ID 1156523.1)  for purging AQ tables and we are getting bellow error

SQL> DECLARE

po dbms_aqadm.aq$_purge_options_t;

BEGIN

po.block := FALSE;

DBMS_AQADM.PURGE_QUEUE_TABLE(

queue_table => 'AQ$_FND_CP_GSM_OPP_AQTBL_T',

purge_condition => NULL,

purge_options => po);

END;

/  2    3    4    5    6    7    8    9   10

DECLARE

*

ERROR at line 1:

ORA-24019: identifier for QUEUE_TABLE too long, should not be greater than 24

characters

ORA-06512: at "SYS.DBMS_AQADM", line 1471

ORA-06512: at line 5

SQL>

Kindly help us in resolving this issue.

Regards,

Surya Prakash