How to assign points based on a key click

Hello! Working on a guitar hero-esque code and we are trying to assign a user points based on the key they click. My problem is the variable points will not update outside of the inner function (titled dowhenkeyispressed) This is our code so far:

function p = pointsE(yPressed)

%returns the number of points the user earned given the yposition of when

%the user pressed the button

yTarget = 0;

difference = yPressed - yTarget; %difference in yposition

points = 0;

function dowhenkeyispressed(~,eventdata)

if eventdata.Character == 'e'

%0.1 - 0.3 = early

%-0.1 - 0.1 = on time

%-0.3 - -0.1 = late

if difference > 0.1 && difference <= 0.3

disp('early')

points = 50;

elseif difference >= -0.1 && difference <= 0.1

disp('on time')

points = 100;

elseif difference >= -0.3 && difference < -0.1

disp('late')

points = 50;

else

disp('no points')

points = 0;

end

close

elseif eventdata.Character ~= 'e'

points = 0;

disp('wrong button')

close

end

end

hFig = figure('Units','Normalized','OuterPosition',[0 0 0 0]);

set(hFig, 'KeyPressFcn', @dowhenkeyispressed);

p = points;

end

any advice? thanks!

[darova]

For mouse click try

ButtonDownFcn

[Julia Dunn]

what about for pressing a key on the keyboard?

[darova]

What is the variable yPressed equal to? Variable difference doesn't change inside the function