Can I lose more than one charge to deal damage with Phoenix Flame?

Name

Can I lose more than one charge to deal damage with Phoenix Flame?

Details

You may discard a maximum of 1 charge to deal 2 additional damage with Phoenix Flame (Cast: Deal 2 damage. You may lose 1 charge to deal 2 additional damage.). You may not discard additional charges to deal additional damage.

Cards

Phoenix Flame

Mages

Nemeses

Other

References

https://boardgamegeek.com/article/29406829#29406829