Calling a function that is linked in a table

I want to call a function via : event, button, x, y = os.pullEvent("mouse_click")
different values of y represent different functions.
the functions are declared normally:

function normal()
print("this function is declared normally")
end

i want to store the name of the function inside a tabel and then run the function via running the key as y from .pullEvent.
This will probably sound confusing so here is an example of what i mean:

function a()
print("a")
end
function b()
print("b")
end
local tabel = {
[1] = a(),
[2] = b()
}
event, button, x, y = os.pullEvent("mouse_click")

then i wanna call the function via interpreting the y from .pullEvent as the key.
so something like:

run tabel[y]

but i dont know how to do this. i searched almost an hour for a solution, but didnt find anything.
i also know that for this example i could just use two if- statements to check whether the y is 1 or 2 but i want to know if this is possible in general and if you have more variables.
i appreciate any help and thank you for your time investment.

Split into new topic.

You were pretty close. When you store the function values in the table, don't use the parentheses:

function a()
 --do stuff
end

local tableOfFunctions = {
  [1] = a,
}

--or just tableOfFunctions = {a}, since it will automatically get the index 1.

tableOfFunctions[1]()

oh dammit :D/>
well thanks for your fast helpfull answer!

Better solution: Index your functions based on y-axis.

function a()
    print("a")
end

function b()
    print("b")
end

local functionTable =
{
    [3] = a,    -- Your table doesn't have to be a sequence.
    [5] = b,    -- Just use the y-axis as an index.
    [6] = b	 -- You can assign functions to multiple y-coordinates.
}			   -- Your on-screen buttons are probably more than 1 pixel
			    --	 thick, right?
    
event, button, x, y = os.pullEvent("mouse_click")

functionTable[y]()    -- Index directly with "y" and call the function.

EDIT: As a side note, is anyone else having this much trouble with the code tags? It's messing up my spacing and random junk like that.

That's exactly what he was talking about doing, he just didn't know the right syntax to do it. I demonstrated the correct syntax, and my example is easily translatable to the code example he provided.