I think you are going in circles. I have earlier explained that the dialog does not support that - quoting:

The dialog currently does not allow you to pass in two or more "favorite" server URLs, which is what I understand may be what you are looking for. If this is the case, and asking the user to manually enter the URL is not an options, I suggest that you design your application in such a way that the user somehow picks the server first in some other form of your app, and then the UADataDialog is shown to him, with the nodes from the server only.

For any endpoint/nodes passed into the dialog, using EndpointDescriptor and NodeDescriptor (NodeDescriptors in MultiSelect) properties, the corresponding endpoint node (a single node, though) will be displayed in the dialog.

I am sorry but this is a misunderstanding of what the dialog (or its design) is supposed to do.

You do not design the properties of the dialog by running the "Test", if that's what you are doing. The only things that "design" the dialog are those that can be seen in its properties (look at the Properties window), but - and that is probably what confuses you - *not* those that appear under Input, Output, or Input/Output categories. All of these are ephemeral and should be passed into/taken from by the code, each time the dialog is invoked.

I understand what you want to achieve, but the behavior is by design. There is no "storage" for stuff that the user does inside the dialog, besides what is available through its properties.

You can, however, store the selected data yourself, and then pass them back to the dialog. That can be just one element (when MultiSelect = false), or multiple elements (when MultiSelect = true).

I am not 100% sure if I understand the request, but I will try to answer it in the way I understand.

The dialog documentation is here: opclabs.doc-that.com/files/onlinedocs/QuickOpc/Latest/User%2...ml#OPC-UA%20Data%20Dialog.html .

The purpose of the dialog is to allow the user to select one data node from an OPC UA server. You can either

Have UserPickEndpoint = false, and pass a server's EndpointDescriptor from your code. In this case the user will be forced to use the server your code have chosen, and only nodes from that server will be shown. Or,

Have UserPickEndpoint = true. In this case the user will be able to freely select an OPC UA server. You can also pass in an EndpointDescriptor, and that will be become a "starting point", but the user will be able to select a different server as well. With UserPickEndpoint = true, servers on the local host, servers on the Windows network, and server on our demo site can be selected (if a an OPC UA Local Discovery Server runs on the corresponding host). In addition, the user can connect to ANY accessible server, by using the "+" icon on the toolbar, and manually entering its URL.

The dialog currently does not allow you to pass in two or more "favorite" server URLs, which is what I understand may be what you are looking for. If this is the case, and asking the user to manually enter the URL is not an options, I suggest that you design your application in such a way that the user somehow picks the server first in some other form of your app, and then the UADataDialog is shown to him, with the nodes from the server only.

Best regards

We do not have examples for other versions of Delphi.

In principle the version should not matter that much, but it may be necessary to re-import the type libraries (the process is described in the User's Guide).