Reflexion performance in iteration

I'm wondering the performance of reflexion in this situation. I'm iterating a (probably) large excel file (let's say 3000 max) which it's going to be done from time to time, and the implementation that my mate is someting like this, iterating each row:

            while (cells.hasNext()) {
                XSSFCell cell = (XSSFCell) cells.next();
                String cellData = this.getCellData(cell);
                if (cellData.trim().isEmpty()) {
                    break;
                }
                Field field = RowPrestacionVO.class.getField(fields.get(idx));
                field.set(vo, cellData);
                idx++;
            }

Is there any probability that I'm going to have some performance issues iterating like that?

Thanks!