title: Hangout bot how to @mention user in a card message
body: <p>I've created a bot that is supposed to inform users from a group about the tasks they were assigned to. It is working well with the simple message using  but it's not working once put in a card message - I got "---" or "???" instead of mention. I tried to put it in different widgets: keyValue, textParagrap or header but it doesn't change anything. Does anyone know if it's possible at all?</p>