i cannt pass puzle 22 help

You need to use the barrels to blast your strong worms up to the ledges above. Move the 250 health worms to each side of the barrels and use the weak worm to release the sheep on the platform below. Explode it when it's underneath the barrels.

hey i have a problem with the last puzzle
The shop unlocked puzzle 5
Very Hard one.......
There are 1 Sentry gun, Blow torch and a parachute....
Help me anyone!!! Thx.

Final puzzle solution (unlockable puzzle 5) (http://forum.team17.co.uk/showthread.php?t=34138)