Is it possible to view the broadcast heartrate from my Garmin Fenix 5 on the Garmin Tacx training app?

Broadcasting the heartrate from my Fenix 5  should be visible on my Tacx training app. However it is NOT visibele.

The heartrate, when using a Tacx heartrate band, is vsisble on the Tacx app.

Are there any suggestions to make the broadcasted heartrate from my Fenix 5  visible on the TACX training app ?

John