How to purge exception queue

I would like to write a store procedure to purge exception queue according to queue and corr_id, but the problem is corr_id needs to be passed as a variable.
declare
          po_t dbms_aqadm.aq$_purge_options_t;
          begin
          po_t.block := FALSE;
          dbms_aqadm.purge_queue_table(queue_table => 'hari_bpfqueuetable',
          purge_condition => 'queue = ''AQ$_HARI_BPFQUEUETABLE_E''',
          purge_options => po_t);
          end;
The above script works fine, but once I add corr_id to purge condition as blow, it gives error.Can anybody help on that? Thanks in advance
declare
          po_t dbms_aqadm.aq$_purge_options_t;
          begin
          po_t.block := FALSE;
          dbms_aqadm.purge_queue_table(queue_table => 'hari_bpfqueuetable',
          purge_condition => 'queue = ''AQ$_HARI_BPFQUEUETABLE_E'' and corr_id = ''???''',
          purge_options => po_t);
          end;

user477534,
Just a suggestion.
What about concatenation?
dbms_aqadm.purge_queue_table(queue_table => 'hari_bpfqueuetable',
purge_condition => 'queue = ''AQ$_HARI_BPFQUEUETABLE_E'' and corr_id = ''' || YOUR_VAR || '''',
purge_options => po_t);Good Luck,
Avi.

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Message was edited by:
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