Qt Code: 
  1. Item{
  2.     property int type: 0
  3.  
  4.   Image {
  5.         id: img
  6.  
  7.  
  8.         source: if(type==0) {
  9.                     "pics/U_basketball.png"
  10.                 } else if(type!=0)
  11.                 {
  12.                     "pics/U_soccerball.png"
  13.                 }
  14.  
  15.         anchors.fill: parent
  16.     }
  17.     Behavior on y {
  18.  
  19.         SequentialAnimation {
  20.             SmoothedAnimation{ velocity: 800 }
  21.  
  22.  
  23.             PropertyAction { target: img; property: "source"; value:if(type == 0)
  24.                                                            {
  25.                                                                        "pics/U_basketball_blurEffect.png";
  26.  
  27.                                                            }else if(type!=0)
  28.                                                            {
  29.                                                                       "pics/U_soccerBall_blurEffect.png";
  30.  
  31.                                                            }
  32.  
  33.  
  34.                                              }
  35. }
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This is code when a ball falls on a mouseclick.At the end the balls source must change .I used PropertyAction for it. The image source changes at the end but the problem is that "else if " part is not working. The two types of ball(type 0 and 1 use the same picture )
. Is this is the right way. Please help me in this .