can you handle my ode45 events problem ?

 if true
   [T,Z] = ode45(@bouncing, [0 12], [100 0],'tspan','options','events');
options = odeset('events');
events(t,z) = [y(1)-10,1,-1]
value = y(1)-10;
isterminal = 1;
direction = -1;
axis([-5 5 0 120])
a = 0;
y = Z(:,1);
while a < 69
viscircles([0,y(1+a)],10,'Linewidth',10');
pause(0.1);
cla;
a = a+1;
end

end

[Walter Roberson]

duplicates http://uk.mathworks.com/matlabcentral/answers/225372-ode45-events-using-problem