passing var object javascript to c++ in function Q_INVOKABLE

[kickoune]

hello,
i have read lot of subject about this but not resolve my problem.

in doc qt it's read var is converting auto in qvariantmap.

i have var javascript

var ChartScatterData = {
     datasets: [ {
                 name: "courbeTest",
                 active: true,
                 color: "rgba(220,220,220,0.5)",
                 radiusPts:3,
                 MinAxisx:0,
                 MaxAxisx:9000,
                 MinAxisy:10,
                 MaxAxisy:18,
                 stepPrimAxisx: 1000,
                 stepSecAxisx: 100,
                 stepPrimAxisy :1,
                 stepSecAxisy:0.1,
            // tableau data
            data: [
              { x: 2000, y: 11  ,  hovered:false },
              { x: 3000, y: 12  ,  hovered:false},
              { x: 4000, y: 13   , hovered:false},
              { x: 5000, y: 14.5 , hovered:false}
            ]
    } ]
}

var ChartScatterData = {
     datasets: [ {
                 name: "courbeTest",
                 active: true,
                 color: "rgba(220,220,220,0.5)",
                 radiusPts:3,
                 MinAxisx:0,
                 MaxAxisx:9000,
                 MinAxisy:10,
                 MaxAxisy:18,
                 stepPrimAxisx: 1000,
                 stepSecAxisx: 100,
                 stepPrimAxisy :1,
                 stepSecAxisy:0.1,
            // tableau data
            data: [
              { x: 2000, y: 11  ,  hovered:false },
              { x: 3000, y: 12  ,  hovered:false},
              { x: 4000, y: 13   , hovered:false},
              { x: 5000, y: 14.5 , hovered:false}
            ]
    } ]
}

To copy to clipboard, switch view to plain text mode 

i would like passing this with arg in function Q_INVOKABLE.
i try to add function to arg Qvariantmap and read the attribut in c++.
if is not possible , can you help me?
or how pass this var in c++ in function Q_INVOKABLE?

thank's