Bug 143671 [Linux-As][Smoke]Parameter can't be used.
Details: [Linux-As]Parameter can't be used. Setp: 1.New a report design. 2.New a paremeter. 3.Preview and click Run Report Parameter. 4.Dialog pop up and press OK. Actual resutl: Report error.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
return parameterValues;
	}
	/**
	 * Preprocess a string.
	 * 
	 * @param string
	 *            the string to process.
	 * @return a string which is not null and without excessive spaces.
	 */
	protected static String preProcess( String string )
	{
		return string == null ? "" : string.trim( ); 
	}
	/**
	 * Convert UTF-8 string into ISO-8895-1
	 * 
	 * @param s
	 *            UTF-8 string
	 * @return
	 */
	protected static String toISOString( String s )
	{
		String ISOString = s;
		if ( s != null )
		{
			try
			{
				ISOString = new String( s.getBytes( UTF_8_ENCODE ),
						ISO_8859_1_ENCODE );
			}