You have added the tag "animation" to the variable sync, yet this tag is nowhere to be found from any client input.
I recommend to remove that tag from the Sync event if you don't use it.
Multiplayer scenarios can be very complex, so without any .capx file, it's basically impossible for us to tell on how you handle Host and Peers accordingly.
Otherwise please provide more information on your current state of how you're handling everything.
Please note that:
Sending client input from any Peer will ONLY send them to the Host.
You in most scenarios you send only physical Keyboard/Mouse input to the Host.
Then let the Host handle what's going to happen.
And to reflect all actions to all Peers, you then forward this information from Host to all Peers.
If you don't do that, you're most likely only going to see what's truly happening on the HOST side only.