Revolving Object

Hey guys I'm somewhat experienced in Creo but I haven't used the program in a year or so.  I've created a stent design that I would like to revolve in order to create the cylindrical shape, but I can't.  When I try to revolve the surface, it tells me that there are no geometric entities in the area or something like that.  I'm not sure what I'm doing wrong because I am setting an axis of rotation as well.  Any help would be appreciated.  I'll attach the part file as well.