When a card assigns a number to how many characters are affected by something in battle, such as capture 2 heroes in battle or withdraw/paralyze 2 heroes in battle (based upon there being two evil brigades in battle, such as Fearfulness), and there's only one hero in battle, does the ability still work to capture or withdraw/paralyze that one hero, or must there be that exact amount for it to work since it doesn't say "up to X heroes in battle"?