code: public static void setVariableWithSingleQuotationMarks(final String variablename,
  		final Object object, final Map<String, Object> variables)
  	{
  		if (object != null)
  		{
  			variables.put(variablename, "'" + object + "'");
  		}
  		else
  		{
  			variables.put(variablename, "null");
  		}
  	}
docs: Sets the variable with singe quotation marks.
  
  @param variablename
  the variablename
  @param object
  the object
  @param variables
  the variables