public String getColumnName(int column) {  
        int count = getColumnCount();
		if (column == count - 1)
			return "Result";
        int offset = 0;	
		if(isMultiple){
            offset = 1;
            if(column == 0) return "File";
        }
		
		String word = "";
		if(column <= (getInputCount()-1+offset) && column >= (offset)){
			word = "Input";
		}
		else if(column > (getInputCount()-1+offset)){
			word = "Output";
			column -= getInputCount();
		}
		if (getInputCount()==1)
			return word;
		return word + " " + (column+1-offset);
	}