I am following the applying datasist to insert and update pages pdf and I am on the update page. After I make the original field hidden and create a new file field, I am choosing the Default Value Lightning Bolt, it says to find WADAupdateform option and then choose the field I set to hidden earlier. I cannot find the WADAUpdateForm option. Is this just an outdated method and I should just get rid of the hidden field and have the file field submit to my database for each specific size image?