else {
//get the current horizontal measurement units of the layout
let currHorzUnits = qxMeasurements.getUnitsFromString(box.style.qxLeft);
//get the operation to be performed
let operation = getValidOperation();
if (operation != null) {//user cancelled
//input transformation amount
let transformAmt = getTransAmountInPts(operation, currHorzUnits, box);
if (transformAmt != null) {
console.log("Entered " + operation + " amount: " + transformAmt + "pt");
//apply the changes to box
box.style.qxLeft = "23pt";
}