Hi, here is my situation: I fill up a dataset with two tables(with already data in it) inside. I attach this dataset to a dataadapter so I can write any inserted objects in the dataset into my database. Then I use the OleDbCommandBuilder to get an insertcommand based on the selectcommand. Then I attach the datatablemappings. And finally I use the update method of the dataadapter. Then I get a syntax error in my INSERT statement. Now I found out what the problem was: some fields contained a non-alphanumeric value. When I removed these, the problem was fixed. But how would one fix this without removing it and still use the commandbuilder or sortlike solution? The commandbuilder doesn't include any "[" or "]" if the table field name contains any special characters(space, slash, etc). Is there anything that can make the builder enclose the field names in these brackets? Kind regards, Nico.