Desperatley Need Some Help! :o

me and my partner are doing a sort of pac-man game on alice.
the problem is we cant get the lollipops to disappear when she goes through them.
How can we fix it??
we already tried to use if/else statements, set the isShowing tablet thing to false, and put the opacity to 0 and it just doesnt want to go away!
Any suggestions??
We would really appreciate any help!
thanks.
Cindy&partner.