on some systems unquoted hostids parameter does not work.

a request that works :

{"auth":"fc0218e31075368f7c54aa46bb63985f","method":"item.get","id":4,"params":

{"extendoutput":true,"hostids":"'1201200000010047'","limit":100}

,"jsonrpc":"2.0"}

request that fails :

{"auth":"fc0218e31075368f7c54aa46bb63985f","method":"item.get","id":5,"params":

{"extendoutput":true,"hostids":1201200000010047,"limit":100}

,"jsonrpc":"2.0"}