B4J Question Can I set "Image File" property for ImageView in Designer?

I am using B4J v6.51.

I added *.png, *.jpg, *.gif files to my project using the Files Manager tab.
I opened the designer and added an ImageView and Drawable is set to "BitmapDrawable". When I select the Image File property, the dropdown is empty. Shouldn't the files I added using the Files Manager show up in the drop down? Or can the ImageView image only be loaded using code?

TIA