Ram space reserved for HighChARTS

Hello,

i want to increase the X Axis of linear highchart up to 1440 ( on day=1440mn)

On Hightcharts , what is the size limit on X axis ?
.. and with any variables to display
On the example , X axis is only for 40 points
Now, i have 5 values displayed with 5 different Y Axis
=> 5×40=200 float values
The number of point (X axis) is defined by a direct value inside the code
not in a defined constant ..

i didn’t see a place to declare the size of RAM to reserve for the charts..
it is not a normal situation …
can the compiler calcul and reserve the amount of RAM for charts ?

What do you think about that ?
How to prevent RAM overvrite/overflow ?

actual code

if (chartT.series[i].data.length > 40) {
chartT.series[i].addPoint([x, y], true, true, true)
} else {
chartT.series[i].addPoint([x, y], true, false, true)
}