gui.OpenURL not opening when I type the set command (Broken Code!)

hook.Add( “PlayerSay”, “OpenURL”, function( ply, text, public )
local args = string.Explode( " ", text )

if args[1] == “!workshop” then
gui.OpenURL( “http://steamcommunity.com/sharedfiles/filedetails/?id=199805963” )
end
end )

This code looks fine to me but when I type “!workshop” the URL does not open?

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Thanks, I just realized!