Hello.
I'm sorry for the delay, we discussed your question with developer,
because UniSelector requires TypeInfo, but Custom tables don't have it...
Documentation about UniSelector (and UniGrid) control can be found since 5.5R2 dontrols documentation:
http://devnet.kentico.com/docs/controls/uniselector_overview.htmTo get it working with custom tables, it would be possible to modify one method from the control code:
~\CMSAdminControls\UI\UniSelector\UniSelector.ascx.cs
private DataSet GetResultSet(string id, int topN, int pageIndex, bool forceReload, int offset, int maxRecords, ref int totalRecords)
In this method, ObjectType is used to get information about column names, up to forming the where condition and query for obtaining the dataset.
You will need to create some kind of dummy ObjectType with information reflecting Custom table structure, so it could be used instead.
Hope this will be suitable for your aim.
Best Regards,
Radek Macalik