Do you mean doing something like this?
int sessionhs;
String shs;
String[] hs = {shs};
String[] lasths;
String ahs1 = lasths[0];
int ahs = int(ahs1);
void setup() {
size(1920, 1080);
lasths = loadStrings("hs.txt");
}
void draw() {
lasths[0] = shs;
if (sessionhs > ahs) {
String[] hs = {shs};
saveStrings("hs.txt", hs);
}
}