QML conditional binding ShapePath fillGradient

Marek

Hi
I have two types of gradient Linear and Radial and want to use one or another depending on variable from model.
In case of simple value binding this works:

color: (some_condition ? "blue" : "red")

Or javascript notation

color: {
    if ( someObj != null ) {
        return someObj.color;
    } else {
        return "black";
    }
}

But in case of setting gradient to fill shape neither of these works:

fillGradient: (gradient_type==0 ?
          RadialGradient {
              centerX: shape.width*gradient_radial[0]/100;
              centerY: shape.height*gradient_radial[1]/100;
              focalX: shape.width*gradient_radial[2]/100;
              focalY: shape.height*gradient_radial[3]/100;
              centerRadius: shape.width/2*gradient_radial[4]/100;
              GradientStop { position: gradient_step_color[0]/100.0; color: gradient_color[0] }
              GradientStop { position: gradient_step_color[1]/100.0; color: dimmer_step_color }
              GradientStop { position: gradient_step_color[2]/100.0; color: gradient_color[2] }
       }
       : null 
)

fillGradient: {
         if (gradient_type==0) {
              return RadialGradient {
                 centerX: shape.width*gradient_radial[0]/100;
                 centerY: shape.height*gradient_radial[1]/100;
                 focalX: shape.width*gradient_radial[2]/100;
                 focalY: shape.height*gradient_radial[3]/100;
                 centerRadius: shape.width/2*gradient_radial[4]/100;
                 GradientStop { position: gradient_step_color[0]/100.0; color: gradient_color[0] }
                 GradientStop { position: gradient_step_color[1]/100.0; color: dimmer_step_color }
                 GradientStop { position: gradient_step_color[2]/100.0; color: gradient_color[2] }
              }
          }
              else {
                    return null;
              }
}

Is there a way to make it work? would it work with function returning Gradient ?

Best,
Marek