Bug 153412 Change parameter type will cause preview fail
Description: Change parameter type will cause preview fail Steps to reproduce: 1. New a report paramter, string, text-box, default value is abc. 2. Drag the parameter to Layout and preview. 3. Change the parameter's type to integer, list-box, add a value 1 4. Preview Expected result: No errors. Actual result: The value "abc" is invalid with the type "integer".
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/IBirtConstants.java
public static final String SERVLET_PATH_RUN = "/run"; 
	
	public static final String SERVLET_PATH_DOWNLOAD = "/download"; 
	
	public static final String VIEWER_PARAMETER = "parameter"; 
	
	public static final String VIEWER_FRAMESET = "frameset"; 
	
	public static final String VIEWER_RUN = "run"; 
	public static final String REQUEST_GET = "get"; 
	
	public static final String REQUEST_POST = "post"; 
	
	public static final String SUFFIX_DESIGN_FILE = "rptdesign"; 
	
	public static final String SUFFIX_TEMPLATE_FILE = "rpttemplate"; 
	
	public static final String SUFFIX_LIBRARY_FILE = "rptlibrary"; 
	
	public static final String SUFFIX_DESIGN_DOCUMENT = "rptdocument"; 
	
	public static final String SUFFIX_DESIGN_CONFIG = "rptconfig"; 
	
	
	public static final String ATTRIBUTE_BEAN = "attributeBean"; 
	
	
	public static final String IS_CASCADE = "isCascade"; 	
}