In every action for the recovery of money only or specific real property, the jury, in their discretion, may render a general or special verdict. In all other cases the court may direct the jury to find a special verdict, in writing, upon all or any of the issues and in all cases may instruct them, if they render a general verdict, to find upon particular questions of fact to be stated in writing, and may direct a written finding thereon. The special verdict or finding must be filed with the clerk and entered upon the record.