How to pass variables as reference from C++ to QML

[dmendizabal]

I need to expose a (slot) function from C++ into QML with parameters as reference to be used on the QML side:

C++ side

class A : public QObject
{
 
public slot:
void func(int& i, QString& s);
}

class A : public QObject
{

public slot:
void func(int& i, QString& s);
}

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QML side

onClicked: {
objectA.func(i,s)
..do something with i
..do something with s
}

onClicked: {
objectA.func(i,s)
..do something with i
..do something with s
}

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When I run the application, I receive an error message saying that javascript doesn't recognise i and s parameters. Any idea?