Animate light source?

I would like to know… How can i attack a light source to an armature?
I can make armature the parent of the light, but in pose mode the light doesnt move with it…

make sure you parent the light to the bone - not just the armature

How? In pose mode? I cant select the light in pose mode.

2 ways -
in object mode - press n to bring up the properties window
in the “Par:” type (or copy and paste) the name of the armature
then in the “Bone:” type (or copy and paste) the name of the bone

another way
in object mode - select the light
shift select the armature
go into pose mode
select the bone
press ctrl P (parent to bone)

Thanks.
2nd options faster