Create chat command for gmod (darkrp)

[blackpro]

Someone can tell me how do i create a chat command that tells me how manny props i have spawned atm?
like !props and than it would tell me in the chats how manny props i have spawned right now.

[Jamestheboss]

? What is the point???

[blackpro]

[QUOTE=Jamestheboss;48563533]? What is the point???[/QUOTE]
to make chat commands like admin advert and such other