// For Position
var control = thisComp.layer("Controller");
var numCols = Math.floor(control.effect("Columns")("Slider"));
var tileIndex = index - control.index - 1;
var col = tileIndex % numCols;
var row = Math.floor(tileIndex / numCols);
var colW = thisComp.width / numCols;
var firstTile = thisComp.layer(control.index + 1);
var rowH = firstTile.height / firstTile.width * colW;
var x = colW * (col + 0.5);
var y = rowH * (row + 0.5);
[x, y];
// For Scale
var control = thisComp.layer("Controller");
var numCols = Math.floor(control.effect("Columns")("Slider"));
var colW = thisComp.width / numCols;
var scale = colW / width * 100;
[scale, scale];