Recording, saving and reloading slider values

gistfile1.txt

(
a = [];
t = Main.elapsedTime;
w = Window.new.front;
r = Slider(w, Rect(100, 140, 200, 20))
   .action_({ arg sl; 
			a = a.add([Main.elapsedTime-t, sl.value*1000]);
	});
)

b

f = File.new("myFile.txt", "w");
f.write(a.asCompileString)
f.close

z = a.collect({arg array; array[1]}); // turn it into value only 


z.plot

(
x = File("myFile.txt", "r");
g = x.readAllString;
y = g.interpret;
t = 0;
{
y.do({arg timeval; 
	timeval[1].postln;
	{r.value = timeval[1]/1000}.defer;
	(timeval[0]-t).wait;
	t = timeval[0];
})}.fork;
)

// another option

a.writeArchive("myFile")
b = Object.readArchive("myFile")