Stuck on Level 36 Help

I am stuck on Level 36. The one with the cannon, tennis ball, torch and explosive. I can't figure out what to do with the explosive.

Thank you in advance

Place the cannon to the right of the blowtorch, then tilt the cannon down so that it is aimed at the catapult, the blow torch should light the cannon which will strike the catapult and the ball should shoot up into the collection area

The dynamite is not needed