I have the following script, it set values, its read from an txt file, into a linegraphic. However now the coordinates are exactly the same it reads, so a value of 200 corresponces with a 200 pixel value for Y. Now my vlues range in the txt file form -1 to +1, and they must correspond with -200 and +200 pixel value for Y. How do I make these changes in the following script.

//Set the y pos of the original instance
setProperty("Mov", _y, 200 - myArray[0]);

for (n=1; n <totVals; n++) {
//Dots and positioning
hor = hor + Space
depth = 200 - myArray[n];
duplicateMovieClip("Mov", "Mov" add n, n);
setProperty("Mov" add n, _y, depth);
setProperty("Mov" add n , _x, hor);

//get coordinates for the lines that are drawn dynamically
if(n==1){
x1 = getProperty(_root.Dot,_x);
x2 = hor;
y1 = 200 - myArray[0];
y2 = depth;

}else{
x1 = getProperty(eval("_root.Mov" add (n-1)),_x);
x2 = hor;
y1 = getProperty(eval("_root.Mov" add (n-1)),_y)
y2 = depth;
}