Bug 203204 [Regression] Error occors when preview the attached report design as XLS [1203]
engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/ExcelUtil.java
{
       
		SimpleDateFormat dateFormat = new SimpleDateFormat(
				"yyyy-MM-dd'T'HH:mm:ss" );
		return  dateFormat.format( (Date) date );
        
	}
    
    public static String getType(Object val)
    {
    	if ( val instanceof Number )
    	{
    	   return Data.NUMBER;	
    	}
    	else if(val instanceof Date)
    	{
    	   return Data.DATE;	
    	}
    	else if (val instanceof Calendar)
    	{
    	   return Data.CALENDAR;	
    	}
    	else if(val instanceof CDateTime)
    	{
    	   return Data.CDATETIME;	
    	}
    	else 
    	{
    	   return Data.STRING;	
    	}