Bug 140538 Can't save by auto when it is preview after create the 2nd parameter
Details: Can't save by auto when it is preview after create the 2nd parameter Step: 1.New a report design. 2.Create the 1st parameter and preview. 3.Create the 2nd parameter and preview. Actual result: After step 2, it is ok. After step 3, if I have not press save button, it will not save by auto.
UI/org.eclipse.birt.report.designer.ui.preview/src/org/eclipse/birt/report/designer/ui/preview/editors/ReportPreviewFormPage.java
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		}
		return true;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.forms.editor.IFormPage#getPartControl()
	 */
	public Control getPartControl() {
		return control;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.forms.editor.IFormPage#getId()
	 */
	public String getId() {
		return ID;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.IWorkbenchPart#createPartControl(org.eclipse.swt.widgets.Composite)
	 */
	public void createPartControl(Composite parent) {
		super.createPartControl(parent);
		Control[] children = parent.getChildren();