remote service and JSON parameter

[gilles38]

Hello all,
for a customer demo I would need to connect a device that would communicate with the controler using remote services.

What I would like to do is using the remote service write a Json into a virtual groupe address: 32/1/20 (define as a 250Byte string)

when a new value is written in 32/1/20 it trigger a script that analyse the Json and then make all the required processing.

my issue is that using 

http://admin:password@192.168.0.10/scada...alue={Room:"Room%20Type":"Bedroom","Room%20Id":%201256321,"Temperature":%2025.5,"Humidity":%2060,"Luminosity":%20800}}

I see that 32/1/20 is updated but with empty value... what would be the trick to make it work ?

thanks
Gilles