orgCol = x;
newCol = x + 1;

InsertCol(newCol);

currentOrgValue = "";
currentNewValue = 0;

for (y = 1; y <= Bottom; y++){
  if ([orgCol,y] != currentOrgValue) {
    currentOrgValue = str([orgCol,y]);
    currentNewValue++;
  }
  [newCol,y] = currentNewValue;
}