How to skip exection of a set of activities at runtime in a BPEL Process.

Hi All,
Please suggest me how the following scenario can be achieved.
I have a BPEL process with 3 scopes, in each scope i have an invoke activity to call an async process.
Currently the control is in scope-1 ,Once the execution of scope-1 is done i want to skip execution of scope-2 and want to execute scope-3.
How can i achieve it at runtime....
Thx,
Siddhardha.

I think that once the instance has started, there is no way to manually mark a scope as "skip" or something. You will need to code a switch in your process when scope2 needs to be executed and when not. You could base the condition on a preference (descriptor property), but those values apply to all instances, not just a single instance

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java.util.NoSuchElementException
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I am using sun JSF 1.1.01 and Web Logic 8.1.
To reproduce this error
1) Type "testname1" in the Name text field and click the "add name" button.
The form is submitted and the "testname1" is added to the NameList (listbox).
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The form is submitted and the "testname1" item is deleted from the nameList.
So far it working fine. Now
3) Click the "back" button on the browser and click "add name" button.
BOOM, you will get the above mentioned error. I tried many things but not able to figure out the fix is.
Please help.
Code example follows...........................
Start-----faces-config.xml----
<?xml version="1.0"?>
<!DOCTYPE faces-config PUBLIC
"-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.1//EN"
"http://java.sun.com/dtd/web-facesconfig_1_1.dtd">
<faces-config>
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</faces-config>
Start-----faces-config.xml----
Start-----TestForm.faces----
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c"%>
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</f:view>
</body>
</html>
End-------TestForm.faces----
Start----testForm.java------
package com.presentation.forms;
import java.util.ArrayList;
import java.util.List;
import javax.faces.model.SelectItem;
public class testForm {
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     String nameValue = "";
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          return names;
     public void setNames(List names) {
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               SelectItem item = (SelectItem) names.get(i);
               if (item.getValue().equals(nameValue)) {
                    names.remove(i);
          return "";
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               names = items;
          } else {
               names.add(new SelectItem(name, name));
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     public void setName(String name) {
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     public String getNameValue() {
          return nameValue;
     public void setNameValue(String nameValue) {
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End------testform.java------

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