for loop and hittest

[genc27]

Hi,
I use arrow keys to collect five apples . I used hittest to make the collected apples invisible but there is a simple problem I can not fix..
thanks for any help

for(gi=0;gi<=5;gi++)
    {
    if(this.kare.hitTest(this.apple+gi)){
this.apple+gi._visible=false;
    }