Hi, I'm creating a custom Block and want to let users upload images to display in the block.  Is there a block attribute to upload image files or to select images that have already been uploaded using the File Manager ?

I found this list of available attributes - https://github.com/SparkDevNetwork/Rock/wiki/Block-Attributes - but it doesn't show anything that could be an uploader.  I also tried the BinaryFileField attribute but that isn't an upoader either.