Question staff spell

Hi
I have an astral walk spell, i can cast it on others and myself.

Now i have made an astral walk staff, when i hold it i cant use it on myself. BUT i can use the staff on others and it works just fine.

Why cant i use it on myself ?

USE WAND STAFF STAFFS WANDS OBJ-WANDS STAVES

Usage: use <staff>
use <wand> <Target>

Using a staff will automatically target everybody (or everything) in a room,
except yourself. Therefore, staves are naturally very powerful and may be very
dangerous to use around other players so use them with caution.

Using wands requires that you point it at a target, which can be either a
character (player) or an object.

Please note: Both staffs and wands must be held in the hand prior to use!
You must still supply the name of the staff or wand to avoid confusion.

See also: RECITE

use staff <target> worked though.

A staff does not use a target. It affects everyone in the room except the user.

Ahh cool thanks.