You can use the GQIDms class in an ad-hoc data source for sending SLNet messages to do anything you want, including retrieving profile instances.

Here's a simplified code snippet on how to do this. You use the IGQIOnInit interface and OnInit you retrieve the DMS object. With that object you can send SLNet calls.

[GQIMetaData(Name = "MyAdhocDataSource")] public class ElementsByEvent : IGQIDataSource, IGQIInputArguments, IGQIOnInit
{
private GQIDMS _dms;

public OnInitOutputArgs OnInit(OnInitInputArgs args)
{
_dms = args.DMS;
return default;
}

public GQIColumn[] GetColumns()
{
//...
}

public GQIArgument[] GetInputArguments()
{
//...
}

public OnArgumentsProcessedOutputArgs OnArgumentsProcessed(OnArgumentsProcessedInputArgs args)
{
//...
}

public GQIPage GetNextPage(GetNextPageInputArgs args)
{
//...
}

private void MyMethod()
{
//... here you can use the _dms class to send SLNet messages
}
}