Jeanne, I believe the lily you have is OT Robina. If so, it will set viable seeds when pollinated with compatible OT or tetraploid trumpet pollen. I only get 1 to 15 good seeds with embryos per pod, with Robina as the pod parent, when using compatible pollen. The pods will contain mostly chaff. The good seeds are easily discernible from the chaff. I have a number of 2nd year Robina cross seedlings in the ground now. These will flower for the first time this summer.
<<=Planted 01.12.13 // Photo date 02.10.2013
Although some of the OT crosses need a chill period, or a pre-soak to remove seed coat germination inhibitors, I have had success by direct sowing the Robina cross seeds into pots.
I hope you happen to find at least a few good seeds in the pods, and good luck in growing them on!
<<<===OT Robina + 1st seedling flower from Robina x SS=>>