use if in row element failed

I add a property cond, when cond is true, it will draw 3 picture,otherwise only one will be drawed
but qml report "Unexpected token `if'" ,any ideas? Thanks

Code:

---

import QtQuick 1.1
 
Rectangle{
     id:rect
     property bool cond:true;
     Row{
            Image{ source:"good.png" }
            if(cond) {
                Image{ source:"good.png" }
                Image{ source:"good.png" }
            }
     }
 }

---

you can use a repeater to set the number as a condition