Successive HTTP GET requests

I’m trying to run two successive HTTP requests from my web browser URL:
http://ip_address:3480/data_request?id=variableset&DeviceNum=127&serviceId=urn:micasaverde-com:serviceId:HumiditySensor1&Variable=CurrentLevel&Value=75&&/data_request?id=variableset&DeviceNum=125&serviceId=urn:upnp-org:serviceId:TemperatureSensor1&Variable=CurrentTemperature&Value=18.0

I have used && to concatenate the two commands. Though the browser returns OK, only the first GET command (humidity) results in an updated Device Value. Where am I going wrong if it can be achieved at all!

I don’t think you can do both at once. Break them up into two separate commands/urls.