How can I get the string after a comma?

For learning purposes, I am creating a script that will create an Instance based on whatever I say.

For example; if I say, "instance/Part, workspace" it will create a part in workspace.

But I don't know how to get everything after the comma.

I also don't know how to make it required to use a comma after they say the instance.

local player=game.Players.LocalPlayer

function newInstance(name, pos)
	local instance=Instance.new(name, pos) --name=name of the instance|pos=parent of the insatnce
end

player.Chatted:connect(function(msg)
	if string.sub(string.lower(msg),1,9)==string.lower("instance/") then
		local ins=string.sub(msg,10,#msg)
		local pos --This is where I am confused. This is supposed to get everything after the comma in ins
		newInstance(ins)
	end
end)

String manipulation
Saviour of the universe

To get everything after the first comma, just match it.

function YourCommasOrYourLife(s)
	return s:match("^[^,]+,(.*)$");
end

How does it work?

• The ^ makes it start from the start of the string. No good matching it midway.
• The [^,] matches everything that's not a comma.
• The + matches one or more occurrences of the preceding set.
• The , matches a comma. Simple.
• The ( ) marks a capture, which is the bit the function wants to return. You can have as many of these as you want.
• The . captures anything, and * captures 0 or more occurrences.
• The $ makes it go all the way to the end. Pointless in this match because * does it anyway, but hey what is learning without unnecessary additions?

[ For example; if I say, "instance/Part, workspace" it will create a part in workspace. ] Have you tried "instance/Part, game.Workspace" ?