Setting modes via Echo Dot

Is it possible to get my Echo Dot to set the camera modes of my two indoor cameras? I want Alexa to set it to either disarm, home or away modes with my voice but after trying several suggestions from help articles online, Alexa just keeps saying different versions of she doesn't know or can't do that. Is it possible in the UK? Am I just saying the wrong command? Can someone talk me through how to set it up (I know that the Alexa app needs to have cams designated to rooms/groups so not sure if I did that right either)?