Layout based forms Image Canvase


I have a LBF where i have numerous fields which are image canvas type to be able to draw data on the image. In my LBF there are rules to hide the image unless a list box is checked. This functionality works when using the form, but when save the images which were supposed to be hidden are saved and are still printed out. Is there a way to accomplish hiding the image canvase from the form and not having it printed unless the rule is checked like other data fields. Im on ubuntu with openemr 7.0.2