Hi! Good catch. I'll take a look and see if there's a bug in the method. In the mean time, you can accomplish this using the pipeline:
1get-blade | where {$_.dn -match "sys/chassis-1/blade-1"} | set-bladepower -status cycleimmediate
Take a look at the get-help for set-bladepower to see the valid values for status....
Thanks!
Josh