Bug 206092 Excel doesn't render well a custom datetime format yyyy-MM-dd hh:mm a
engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/ExcelUtil.java
{
    	      return "General Date";	   
    	   }
    	   return new DateFormatter(val).getPattern( );
    	}
    	else if(val == null && data instanceof Time) {
    		return "Long Time";
    	}
    	else if(val == null && data instanceof java.sql.Date) 
    	{
    		return "yyyy-M-d";
    	}
    	else if(val == null && data instanceof java.util.Date) 
    	{
    		return "yyyy-M-d HH:ss:mm AM/PM";
    	}
    	else if(val != null && data instanceof Number)
    	{
    	   
    	   if(val.indexOf( "E" ) >= 0){
    	      return "Scientific";
    	   }
    	   return new NumberFormatter(val).getPattern( );	
    	}
    	else if(val != null && data instanceof String)
    	{
    		return new StringFormatter(val).getPattern( );
    	}
    	
    	return null;