Report Designer - unable to add custom data provider

I'm trying to add custom data fields to a report using Report Designer but am unable to select a different data provider as was possible in previous versions of Sage 200, I'm currently using Sage 200c 

The data providers available in this version is only 'Default Data Provider' but an elipsis is available to add aditional providers, but not sure what DLL's to select to add in new ones.

I would like to be able to select a SQL data provider as this is what I require for my report to work as before

Thanks