Why can't I detect any players in a Region3? [Solved By Me]

I'm trying to create a check to see how many players are still in a Region3, and increases the value of a variable if there is. The variable always reports 0, even if there are players in it. Parts are detected, I just don't need them.

local partsInRegion = game.Workspace:FindPartsInRegion3(region, Reg, 1000)
		local foundPlayers = 0
		for i, Reg in pairs(partsInRegion) do
			if Reg:FindFirstChild("Humanoid") ~= nil then
				print("Found "..Reg.Parent.Name)
				foundPlayers = foundPlayers + 1
			end
		end
		print(foundPlayers.. " players found.")
		if foundPlayers == 0 then
			Status.Value = "There are no more players remaining!"
		end

*Sorry for indentation, this is a really long script, and this is the important part.

All help is appreciated, LennyPlayzYT

Found the Issue, thanks to LoveSpeaksOutTruth.

Reg is equal to the character.

We can find the player by doing game.Players:GetPlayerFromCharacter(Reg.Parent), then get the player from there.

local partsInRegion = game.Workspace:FindPartsInRegion3(region, Reg, 1000)
        local foundPlayers = 0
        for i, Reg in pairs(partsInRegion) do
            if game.Players:GetPlayerFromCharacter(Reg.Parent) then
                print("Found "..Reg.Parent.Name)
                foundPlayers = foundPlayers + 1
            end
        end
        print(foundPlayers.. " players found.")
        if foundPlayers == 0 then
            Status.Value = "There are no more players remaining!"
        end