range rx = [Book1]Sheet1!col(A);
range ry = [Book1]Sheet1!col(B);
double dy = max(ry);
double dx = table(ry, rx, dy);
label -a dx dy max;

range rx = [Book1]Sheet1!col(A);
range ry = [Book1]Sheet1!col(B);
double dy = max(ry);
double dx = table(ry, rx, dy);
string strlbl$ = "(" + text(dx)$ + "," + text(dy)$ + ")";
label -s (%(strlbl$));
text.x= dx + text.dx/2;
text.y= dy - text.dy/2;