Machamp's Fighting Tag

[Nintendan]

Machamp Prime's Fighting Tag Power states that if Machamp is on your bench, you may switch with your Active Pokémon and move all :fighting: energy from the active (being switched) to the Machamp Prime you send in.
Question. Can I Fighting Tag even if my active has no Fighting Energy?

 

[PokePop]

No. Note the phrase "if you do" after moving the energy.
So, if you don't, you can't.