ExternalParameter attr. applied on parameter in an embedded property does not show Display name on the GUI

Environment:

Windows 10, 64-bit

Test Automation 9.8.1

Steps to reproduce:

1. create a embeded property and apply external parameter attr. to the parameters in the embeded property

        [Display("Instruments", Order: 100, Groups: new[] { "Common" })]
        [EmbedProperties]
        public InstrumentSetupTx InstrumentSetup { get; set; }
   
        public class InstrumentSetupTx: IntrumentSetupBase
        {
            private InstrumentAdaptor InstrumentAdaptorObj;
            [ExternalParameter]
            [Display("Analyser", Order: 0.1)]
            public InstrumentAdaptor InstrumentAdaptor { get; set;}
        }

2. run editor.exe and add the test step, which has this embeded property

Actual result: The GUI "parameter- editor" shows the parameter name "InstrumentAdaptor".

Expected result: The GUI "parameter- editor" should show display name "Analyser".

Other remarks: