1diff --git a/src/Main.ts b/src/Main.ts
  2index 57c581e..f364852 100644
  3--- a/src/Main.ts
  4+++ b/src/Main.ts
  5@@ -1,4 +1,5 @@
  6 import { Sheet } from "./Sheet"
  7 
  8 var sheet = new Sheet();
  9-sheet.init();
 10+sheet.load();
 11+sheet.toString();
 12\ No newline at end of file
 13diff --git a/src/Sheet.ts b/src/Sheet.ts
 14index 8e5da10..dd218e9 100644
 15--- a/src/Sheet.ts
 16+++ b/src/Sheet.ts
 17@@ -6,7 +6,6 @@ import { Errors } from "./Errors"
 18 import * as Formula from "formulajs"
 19 
 20 var Sheet = (function () {
 21-  'use strict';
 22   var instance = this;
 23 
 24   // Will be overwritten, but needs to be initialized, and have some functions for tsc compilation.
 25@@ -113,26 +112,10 @@ var Sheet = (function () {
 26     getCellDependencies(cell: Cell) {
 27       return this.getDependencies(cell.id);
 28     }
 29-    scan() {
 30-      var input = [
 31-        [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, "SUM(A1:D1, H1)"],
 32-        [-1, -10, 2, 4, 100, 1, 50, 20, 200, -100, "MAX(A2:J2)"],
 33-        [-1, -40, -53, 1, 10, 30, 10, 301, -1, -20, "MIN(A3:J3)"],
 34-        [20, 50, 100, 20, 1, 5, 15, 25, 45, 23, "AVERAGE(A4:J4)"],
 35-        [0, 10, 1, 10, 2, 10, 3, 10, 4, 10, "SUMIF(A5:J5,'>5')"]
 36-      ];
 37-      for (var y = 0; y < input.length; y++) {
 38-        for (var x = 0; x < input[0].length; x++) {
 39-          // set the cell here
 40-          var id = utils.XYtoA1(x, y);
 41-          var cell = new Cell(input[y][x].toString(), id);
 42-          registerCellInMatrix(cell);
 43-          recalculateCellDependencies(cell);
 44-        }
 45-      }
 46-      for (var key in this.data) {
 47-        console.log(this.data[key].id, this.data[key].formula, this.data[key].value);
 48-      }
 49+    setCell(cellKeyString: string, formula: string) {
 50+      var cell = new Cell(formula, cellKeyString);
 51+      registerCellInMatrix(cell);
 52+      recalculateCellDependencies(cell);
 53     }
 54   }
 55 
 56@@ -552,15 +535,39 @@ var Sheet = (function () {
 57     }
 58   };
 59 
 60-  this.init = function () {
 61-    instance = this;
 62-    parser = FormulaParser(instance);
 63-    instance.matrix = new Matrix();
 64-    instance.matrix.scan();
 65+  var setCell = function (cellKeyString: string, value: string) {
 66+    instance.matrix.setCell(cellKeyString, value);
 67   };
 68+
 69+  this.load = function () {
 70+    var input = [
 71+      [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, "SUM(A1:D1, H1)"],
 72+      [-1, -10, 2, 4, 100, 1, 50, 20, 200, -100, "MAX(A2:J2)"],
 73+      [-1, -40, -53, 1, 10, 30, 10, 301, -1, -20, "MIN(A3:J3)"],
 74+      [20, 50, 100, 20, 1, 5, 15, 25, 45, 23, "AVERAGE(A4:J4)"],
 75+      [0, 10, 1, 10, 2, 10, 3, 10, 4, 10, "SUMIF(A5:J5,'>5')"]
 76+    ];
 77+    for (var y = 0; y < input.length; y++) {
 78+      for (var x = 0; x < input[0].length; x++) {
 79+        // set the cell here
 80+        var id = utils.XYtoA1(x, y);
 81+        this.setCell(id, input[y][x].toString());
 82+      }
 83+    }
 84+  };
 85+
 86+  this.toString = function () {
 87+    for (var key in this.matrix.data) {
 88+      console.log(this.matrix.data[key].id, this.matrix.data[key].formula, this.matrix.data[key].value);
 89+    }
 90+  };
 91+
 92+  parser  = FormulaParser(instance);
 93+  instance.matrix = new Matrix();
 94   this.utils = utils;
 95   this.helper = helper;
 96   this.parse = parse;
 97+  this.setCell = setCell;
 98 });
 99 
100 export {