NPC for Pointshop.

Hello, I recently found a tutorial on the old GMod Wiki. (Link) I was trying to make it so that when the NPC was used, it would run the command to the client to open up the pointshop menu. However I couldn’t quite figure out how to do it or where to exactly start.
Any help would be much appreciated!

Do this:
[lua]
usermessage.Hook(“ShopNPCUsed”,PS:ToggleMenu)
[/lua]
instead of this.
[lua]
usermessage.Hook(“ShopNPCUsed”,myMenu)
[/lua]