I have an Ultra grid that has  a dataset with 2 tables, table 0 has all job records, the unique Column would be the JobID, an admin will post a job opening the ID gets generated. and i pass that relation as parent column, the Bid table has all the bids related to any specific job, there is a BidID which is unique amongst ALL the bids. and there is a JobID which has the jobID its related to.  a single job may have many bids. when i set the relation and run the code i get "these columns dont currently have unique values." how do i specify a one to many relationshipt between the two tables in the dataset?