Hello, this is a simple fix. I have already fixed it, and selected region is saved to bitmap at client side correctly. I have also found other issues that I'm willing to solve for you. Other issues i found are: 1) If selection begins from right bottom to left top (not from top to bottom), the bitmap is empty (already fixed). 2) If server is in screen stretch mode (Redimensionar imagem) the selected region is not adjusted for stretched area (to be done if needed). Please confirm your profile or payment method so we can go further with this project. Kind regards, Damian.