How to Use Dynamic Action ?

Dear All,
i am using Apex 4.1 Ver.
i need return value in text Area Item when i select any Value in Select List.
i have One select List Item :p1_template_id and one text Area Item P1_template_description .
Select List Code
SELECT TEMPLATE_NAME D, TEMPLATE_ID R FROM TEMPLATE_MAS ORDER BY TEMPLATE_NAME
Table Name
CREATE TABLE "CRM_CAM_TEMPLATE_MAS"
   (     "TEMPLATE_ID" VARCHAR2(50) NOT NULL ENABLE,
     "TEMPLATE_NAME" VARCHAR2(500) NOT NULL ENABLE,
     "DESCRIPTION" CLOB
      CONSTRAINT "CRM_CAM_TEMPLATE_MAS_PK" PRIMARY KEY ("TEMPLATE_ID") ENABLE
/i want to Value of DESCRIPTION Column in to Text Area Item when i select Template ID from Select List .
How can i do this with Dynamic Action or any other Way ?
How can i do this ?
Thanks
Vedant

Hi Kiran,
i have done it with Text Area but when i change text Area with Rich Text Editor then it's not Working.
How can i do this with Rich Text Editor.
My Code
Application Process
DECLARE
   v_mgr VARCHAR2(4000);
   CURSOR cur_c
   IS
SELECT DESCRIPTION FROM TEMPLATE_MAS WHERE TEMPLATE_ID =:TEMPLATE_ITEM ;
BEGIN
   FOR c IN cur_c
   LOOP
      v_mgr := c.DESCRIPTION;
   END LOOP;
   OWA_UTIL.mime_header ('text/xml', FALSE);
   HTP.p ('Cache-Control: no-cache');
   HTP.p ('Pragma: no-cache');
   OWA_UTIL.http_header_close;
   HTP.prn ('<body>');
   HTP.prn ('<desc>this xml genericly sets multiple items</desc>');
   HTP.prn ('<item id="P1_SUMMARY">'||v_mgr|| '</item>');
   HTP.prn ('</body>');
EXCEPTION
   WHEN OTHERS
   THEN
      OWA_UTIL.mime_header ('text/xml', FALSE);
      HTP.p ('Cache-Control: no-cache');
      HTP.p ('Pragma: no-cache');
      OWA_UTIL.http_header_close;
      HTP.prn ('<body>');
      HTP.prn ('<desc>this xml genericly sets multiple items</desc>');
      HTP.prn ('<item id="P1_SUMMARY">'||SQLERRM||'</item>');
      HTP.prn ('</body>');
END;
Java Script
<script language="JavaScript" type="text/javascript">

</script>
HTML Form Element Attributes
onChange="pull_multi_value(this.value)";
For Riich Text Editor i have changed these value in Application Process and table column data Type
v_mgr clob;
DESCRIPTION Column Type Clob
How can i do this with Rich text Editor /
Thanks

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I want to share my experience, creating AJAX procedures in APEX 4.0.
LIMITATIONS
•     How Can I Hide UPDATE button while I press NEW button. ??
•     How Can I Hide CREATE button while I’m UPDATING A RECORD. ??
•     How can I avoid multiple Inserts or Updates. ??
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Item(s):     P1_ACTION
Condition:     equal to
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PL/SQL Code:
SELECT dname, loc
INTO :P1_DNAME, :P1_LOC
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The first limitation, the value of page elements don’t do refresh so I added the following true actions to the dynamic action AFTER Execute PL/SQL Code.
Action:     Set Value
Unmark *‘Fire on page load’* and *‘Stop execution on error’*
Set Type:     PL/SQL Expression
PL/SQL Expression:     :P1_DNAME
Page Items to submit:     (none) (leave it blank)
Affected Elements: Item P1_DNAME
Action:     Set Value
Unmark *‘Fire on page load’* and *‘Stop execution on error’*
Set Type:     PL/SQL Expression
PL/SQL Expression:     :P1_LOC
Page Items to submit:     (none) (leave it blank)
Affected Elements: Item P1_LOC
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Unmark ‘Fire on page load’ and ‘Stop execution on error’
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PL/SQL Expression:     :P1_DNAME
Page Items to submit:     P1_DNAME
Affected Elements: Item P1_DNAME
Action:     Set Value
Unmark *‘Fire on page load’* and *‘Stop execution on error’*
Set Type:     PL/SQL Expression
PL/SQL Expression:     :P1_LOC
Page Items to submit:     P1_LOC
Affected Elements: Item P1_LOC
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Affected Elements: Region Departments
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Item(s):     P1_ACTION
Condition:     equal to
Value:     CREATE
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Page Items to Submit:     P1_DEPTNO, P1_DNAME, P1_LOC
Don’t include any false action and create the Dynamic Action.
Include the following True Actions BEFORE the Execute PL/SQL Code true Action.
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Unmark *‘Fire on page load’* and *‘Stop execution on error’*
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DECLARE
v_pk NUMBER;
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SELECT DEPT_SEQ.nextval INTO v_pk FROM DUAL;; -- or any other existing sequence
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Unmark *‘Fire on page load’* and *‘Stop execution on error’*
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PL/SQL Expression:     :P1_DNAME
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Affected Elements: Item P1_DNAME
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Unmark ‘Fire on page load’ and ‘Stop execution on error’
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Item(s):     P1_ACTION
Condition:     equal to
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Include the following True Actions AFTER the Execute PL/SQL Code true Action.
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Action:     Clear
Unmark ‘Fire on page load’
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<removed_by_moderator>
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Edited by: Julius Bussche on Aug 26, 2008 3:25 PM

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http://www.ddbcinc.com/askDDBC

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