Sondra, you may or may not have done it right. According to the article in the link below, to propagate this plant by seed you should "Start plants from seed by crumbling an old blossom cluster and placing it on the soil". Seed pods of most plants are left to dry on the plant, then just as you see them beginning to open, you collect the pods, shake the seeds out on a piece of paper, and let them dry completely (for up to a couple of weeks for large seed) before storage. Some seeds need to be planted immediately, though, and this may be one of those. This Tradescantia is not hardy around here, so if you want to have it next year for sure, you should bring your plant indoors or try overwintering cuttings too.

Here is a link that might be useful: Is this it?

Thank you Wild Rose..that is it...I guess I need to undo what I did and also bring them into the house...LOL Like they say..you learn from your mistakes...:))

Sondra