How to select blank as a first element in DropDownBox

Hi All,
I have a problem with dropdown boxes. i want to set blank as first value in my dropdown box. SAP has provided with blank but i am using model node. i read about cardinalities and setLeadSelection. but my problem has not been solved. Can any give some suggetions.
Thanks and Regards
Ravi Golla

Hi ,
Usually , if you make the selection property of the node as 0..1 or 0..n u can achieve it..
Since its a model node i doubt it.. ! If its a dropdownkey mapped to a simple type.
a setXXX(" "); would give you an empty value initially... If dropdownbyindex mapped to a model node.. i guess.. you have to copy it to a value node and work on it,
Regards
Bharathwaj

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<?xml version="1.0" encoding="UTF-8"?>

<xs:schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:qbl="http://10.0.1.233:8080/home/cpa/xsd/qbl.xsd" xmlns:xdb="http://xmlns.oracle.com/xdb" xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified" version="1.0" xdb:storeVarrayAsTable="true">
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extractValue(value(b), '/QBL/Date_Prepared')
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Mary Wu

Hi Mark,
Thank you for your reply and I really appreciate!
I tried the select statement you gave me but I got error:
SQL*Plus: Release 9.2.0.3.0 - Production on Fri Aug 1 09:11:03 2003
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.3.0 - Production
With the Partitioning, Oracle Label Security, OLAP and Oracle Data Mining options
JServer Release 9.2.0.3.0 - Production
SQL> set long 10000;
SQL> set pagesize 10000
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SYS_NC_ROWINFO$
<QBL_Envelope>
<Transmission_Date>030531</Transmission_Date>
<QBL>
<QBL_Number>316180J2</QBL_Number>
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<Line_Item_Cube_Qualifier>E</Line_Item_Cube_Qualifier>
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SQL> select extractValue(value(q), '/QBL/QBL_Number'),
2 extractValue(value(q), '/QBL/Priority'),
3 extractValue(value(q), '/QBL/Date_Prepared'),
4 extractValue(value(n), '/Item_Name'),
5 extractValue(value(l), '/Line_Item/Line_Item_Weight'),
6 extractValue(value(l), '/Line_Item/Line_Item_Cube_Info/Line_Item_Cube'),
7 extractValue(value(l), '/Line_Item/Line_Item_Cube_Info/Line_Item_Cube_Qualifier')
8 from MYQBL e,
9 table (xmlsequence(extract(value(e), '/QBL_Envelope/QBL'))) q,
10 table (xmlsequence(extract(value(q), '/QBL/Line_Item'))) l,
11 table (xmlsequence(extract(value(l), '/Line_Item/Item_Name'))) n;
select extractValue(value(q), '/QBL/QBL_Number'),
ERROR at line 1:
ORA-00904: "SYS_NT0jPUiVR5SS6VqgqEvU1LkQ=="."SYS_NC_ROWINFO$": invalid
identifier
SQL>
Do you have any idea about it?
Actually before I posted the message I had tried the same select statement and had got the same error.
Again, thank you very much and I really appreciate your help.
Mary Wu

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