Scratch

I am having an issue using when touching sprite decrement counter by 1. However, its not happening that way. Here is some of my blocks. If its just me being dumb please school me on where I'm going wrong.

<when[ start ]key pressed>
<forever>
<go to x   <pick random(-240  )to(  240)y:(180 )
<hide>
<wait(2  )secsc>
<show>
<glide( 6 )secs to x   <pick random( -240 )to( 240 )y   -200)
<if><touching[ sprite2]
<change{ lives }by(-1)
end if
end forever

I have three sprites with the same blocks and the variable never decrements when they touch sprite2. Any ideas or suggestions? Thanks.