Hello, Sorry, but I made a mistake. I added a Height property to the DynaPDFRectMBS class in 26.1. After refusing to add it for 10+ years. The calculation there returns the wrong sign, so you may see a negative height. Normally adding a property is no problem. But a lot of people have a method Height using extends to work with DynaPDFRectMBS class. If your code expectes that r.Height calls your own code, then you may be confused seeing the negative height from the property with the same name. A quick solution for yourself is to keep using 26.0 or older plugin, rename your Height method and all places you use it or wait for the updated plugin. Sorry for the inconvenience. The class is fixed for upcoming plugin versions. Best regards, Christian -- Read our blog about news on our plugins: http://www.mbsplugins.de/