Within Powerapps, I am able to use MicrosoftTeams.GetMessagesFromChannel(Teams groupid, channelid) and thereafter read many of chats (messages) within the GetMessagesFromChannel().value such as from.user.displayname, body.content, etc. What I do is set the items property to the MicrosoftTeam.GetMessagesFromChannel(groupid, channelid).value to a gallery and reference the chat details within the gallery using ThisItem.from.user.displayname and ThisItem.body.content. This works fine. However, I need to access the replies to the message. I understand the replies are contained within the "mentions" which I don't know how to access it or its subcomponents (it seems to be a table of somekind). For example, when I use ThisItem.mentions I can see that the type is Table but how to access this table (see second attachment). Similarly there is also another table named reactions.
I tried to use a drop box to list the mentions but then I get a message "Warning:The columns produced by this rule are all nested tables and/or records, however the property expects at least some columns of simple values (such as text, or numbers). See first attachment.
I tried to also use the mentions as data source for a gallery, but did not see anything.
How can I access the mentions and reactions within the MicrosoftTeams channel messages.
Thank you for your help.