IOT Rules Problem (IOT/ DynamoDB)

[adlerlinhares]

Hi,

I would like to know how to use a payload item as my Range key once i have only seem how to use timestamp as it. So once my payload is:

{
"reported": {
"Chiller 2": {
"Temp compressor in": 0,
"Pressao evaporador": 73,
"Temp. evaporador out": 66,
"Energia Demandada": 0,
"Temp. evaporador in": 83,
"Pressao condensador": 83,
"Temp. compressor out": 85
},
"Predio": {
"Nome": "PredioA"
},
"Data": {
"Calendar": "20160816203033",
"Cabecario ": "16/08/2016 20:30:33"

I would like to Predio.Nome to be my Hash key and Data.Calendar to be my RangeKey, right now i just can use timestamp as range key like you can see:

Role name: predioa-iot-actions-role
Table name: TESTE
Hash key: Nome
Hash key value: ${topic(3)}
Hash key type: STRING
Range key: Date
Range key value: ${timestamp()}
Range key type: NUMBER

What can i do to have the wanted result?

Regards,
Adler Linhares