I am attempting to get the startCol, endCol, startRow, and endRow properties from the coordinates object passed into the beforePaste hook. When observing the endCol and endRow values, regardless of how many rows/columns I paste into, the endCol and endRow values always match the startCol and startRow values.
Here is an example of that logging to console: https://jsfiddle.net/kjay7wsd/1/
Here is what gets passed in through the coordinates object: