Why can't I pass this value to this function?

function unselect()
    local children = script.Parent:GetChildren()
    for i = 1,#children do
        if children[i].ClassName == "ImageButton" and children[i].Chosen.Value == true then
            print("Unselected " .. children[i].Name)
            children[i].Chosen.Value = false
            children[i].BorderSizePixel = 2
            children[i].BorderColor3 = Color3.fromRGB(35,35,35)
            children[i]:TweenSize(UDim2.new(0, 80, 0, 80), "In", "Quad", .2)
        end
    end
end

function pselect(pokeID)
    local clicked = pokeID.Parent.Parent
    script.Parent.PokemonID.Value = pokeID
    unselect()
    clicked.Chosen.Value = true
    clicked.BorderSizePixel = 3
    clicked.BorderColor3 = Color3.fromRGB(57,141,230)
    clicked:TweenSize(UDim2.new(0, 90, 0, 90), "Out", "Quad", .2)
    print(pokeID)
    print(clicked.NameLabel.Text)
end

script.Parent.P151.MouseButton1Click:connect(pselect(script.Parent.P151.PokemonID.Value))

There's a bit of extra code there, but I figured you need to see it all, just in case. The problem is occurring on line 15,

local clicked = pokeID.Parent.Parent

The error message I get is:

Players.pokemon_origin.PlayerGui.ScreenGui.PokemonList.LocalScript:19: attempt to index local 'pokeID' (a number value)

The value I'm passing is an integer, it's just 151. The error seems to be in the passing of the value, because it gives an error the first time my script tries to use the passed value (151). If I missed out any information, please ask. Thanks.

EDIT: It clipped off the last line of the code, here it is: script.Parent.P151.MouseButton1Click :connect(pselect(script.Parent.P151.PokemonID.Value))