Converting hex to decimal

[dick]

Zenofmud
Another problem for me:
with converting this :
My dht11 gives 17.5 as variable value.
with function

msg.payload = {"command":"udevice", "idx":1558, "svalue":"temp"}
return msg;

OR with Json -Convert between Json to Json string -
With MQTT is it for me not possible to get the value 17.5 ° in the command line
MQTT gives in debug

object  command: "udevice", idx: 1558  svalue: "temp"

And i would have idx: 1558 , 17.5
Can you give me advise
Dick