I DON'T understand how to complete puzzle 22. Please help me!

I knew this game wasn't dead! \o/

And it's quite funny players still don't tell people which version they got :D

Anyways it's almost the same for DS and PSP. First turn: Place worm right side on the barrel and place the girder so that you can reach the "tunnel". Second turn: Place worm on left side of the barrel. And finally, third turn, use your 1 hp worm to go into the tunnel and launch the sheep. It should explode directly under the barrel. Your two other worms will fly to the crates and you can collect them in turn 4/5.

Thanks!!!!!!!!!!