Cant find ply? help

[Dobbie]

local frame = vgui.Create("DFrame")

frame:SetSize(1000,720)
frame:Center()
frame:SetVisible(true)
frame:MakePopup()

function buttonPressed()

print("The button was pressed!")
ply:SetHealth( 200 )
end

local button = vgui.Create("DButton", frame)
button:SetPos(10,50)
button:SetSize(200,45)
button:SetText("SetHealth")
button.DoClick = buttonPressed

its in singleplayer lua_openscript_cl

i get "attempt to index global 'ply' (a nil value)"

[c👌de_g🎷]

Change ply to LocalPlayer() and make buttonPressed a local function.

[Dobbie]

Does not set my health? Do i need to run this on the server instead?

[c👌de_g🎷]

Yeah, you need to network it.

[Shadowmisti]

Derma won't work on serverside. You'll need to network. Use net.SendToServer and net.Receive

[c👌de_g🎷]

Please use local or anonymous functions for callbacks.

[WasabiThumbs]

And the first argument passed for the Receive callback is the message length.