Live tracking with own traccar Server

[sebbo]

i set up my own traccar server and am trying to use the live tracking option in locus. when using  fixed url: http://192.168.10.7:5055/?id=123456&lat=51&lon=12&altitude=300&speed=20
its working and sending the position to the server.

when i am using the placeholders, its not working


any ideas?