how to save app in qliksense using node js

[NaikPravee]

I am using  DoSave method for saving the app.

the code is like this

{

"jsonrpc": "2.0",

"id": 6,

"method": "DoSave",

"handle": 1,

"params": [

]

}

and i am getting error like this

{
jsonrpc: '2.0',
id: 6,
error: {
code: -32602,
parameter: 'Invalid handle',
message: 'Invalid Params'
}
}

please can anybody help to sort out the problem