The flowers will turn into little plantlets. Let them grow a few leaves and roots, then you shouldn't have any problem planting them and getting them to grow. Congratulations - it's always neat when plants flower, and especially those swords!
That's cool, Jen! I didn't know that. My terrestrial gardening experience tells me rooting flower stems won't work, so this is interesting! Then again, Airplane Plants' flower stalks grow new babies after they're done blooming... Hmmmmm ... wonder what other plants out there do that ...The flowers will turn into little plantlets.