corona and appwarp moving hero in multiplayer - lua

Question

I am trying to move my hero in a multiplayer setup to the left and right.
I have to squares to initiate move left and move right for a regular crircle on a ground.
I am using AppWarp to initate the multiplayer instance and that is working fine, however I am having trouble on how to communicate the moving of the circle.
Here is my lua:
-- When left arrow is touched, move character left
function left:touch()
motionx = -speed;
end
left:addEventListener("touch",left)
-- When right arrow is touched, move character right
function right:touch()
motionx = speed;
end
right:addEventListener("touch",right)
-- Move character
local function movePlayer (event)
appWarpClient.sendUpdatePeers(tostring(player.x))
end
Runtime:addEventListener("enterFrame", movePlayer)
-- Stop character movement when no arrow is pushed
local function stop (event)
if event.phase =="ended" then
motionx = 0;
end
The keyline here is
appWarpClient.sendUpdatePeers(tostring(player.x))
with this I send the current X position of my hero (the circle) and in my warplisteners I pick it up like so:
function onUpdatePeersReceived(update)
local func = string.gmatch(update, "%S+")
-- extract the sent values which are space delimited
--local id = tostring(func())
local x = func()
statusText.text = x
player.x = x + motionx
end
When I start the game on 2 clients I can start moving the ball but it is wobbeling back and forth between 62 units, wich i guess is my speed
speed = 6; -- Set Walking Speed
if I change this:
function onUpdatePeersReceived(update)
local func = string.gmatch(update, "%S+")
-- extract the sent values which are space delimited
--local id = tostring(func())
local x = func()
statusText.text = x
player.x = x + motionx
end
to this:
function onUpdatePeersReceived(update)
local func = string.gmatch(update, "%S+")
-- extract the sent values which are space delimited
--local id = tostring(func())
local x = func()
statusText.text = x
player.x = player.x + motionx
end
(last line before "end")
player.x = player.x + motionx
instead of
player.x = x + motionx
The coordinates gets updated but the hero only moves on one of the screens.
Any idea how to implement a better movement system that moves my hero on both clients at the same time?
Kind regards
edit:
Added if-else, it was pending between +-speed and 0 since the speed is 0 when hero is stopped.
if(motionx ~= "0") then
player.x = player.x + motionx
statusText.text = "motionx ~= 0"
elseif(motionx == "0") then
player.x = player.x
else
statusText.text ="Something went horribly wrong"
end