The EAFlashUpload has a flexible way to customize messages with using formatting constants.

The following table contains description of allowed constants:
Constant name Description
FILE_INDEX The index of a file.
FILE_NAME The name of a file.
RESIZED_NAME The name of a resized image file.
FILE_SIZE The formatted size of the file. The formatting of the size value is based on sizeAbbrev
FILE_TYPE The type of the file.
FILE_CREDATE The creation date of the file on the local disk.
FILE_MODDATE The date that the file on the local disk was last modified.
FILE_SERVER_RESP The raw data returned from the server after a successful file upload.
FILE_STATUS The status string of the file. The value depends on fileStatusXXXMsg properties.
   
FILES_COUNT The count of files that are being contained now in the upload queue.
TOTAL_FILES_SIZE The total size of files that are being contained now in the upload queue. The value is formatted based on sizeAbbrev
FILE_SIZE_LIMIT The maximum size in bytes of each file that can be added to the upload queue. The value is formatted based on sizeAbbrev
FILES_COUNT_LIMIT The maximum count of files which can be added to the upload queue.
TOTAL_FILES_SIZE_LIMIT The maximum total size in bytes of all files that can be added to the upload queue. The value is formatted based on sizeAbbrev
REJ_FILES_COUNT The count of files that were rejected by a defined policy after one selection operation.
   
UPLOAD_URL The URL of the server script configured to handle upload through HTTP POST calls.
REDIRECT_URL The URL to which user will be redirected after successful upload.
   
FILE_PERCENTS_DONE The percents progress of current file.
PERCENTS_DONE The percents progress of total upload.
BYTES_TOTAL The size of all files that are being uploaded to the server. The value is formatted based on sizeAbbrev
BYTES_LOADED The uploaded bytes of the current upload. The value is formatted based on sizeAbbrev
FILE_BYTES_LOADED The uploaded bytes of the current uploading file. The value is formatted based on sizeAbbrev
TRANSFER_RATE The transfer rate(B/s) of the current upload.
ELAPSED_TIME The time that has elapsed since upload begin. The value is formatted based on timeAbbrev
REMAINING_TIME The remaining time until the end of upload. The value is formatted based on timeAbbrev
For string formatting you should place name of appropriate cosntant between two # signs. The message may be as follows: "Maximum file size(#FILE_SIZE_LIMIT#) exceeded! #REJ_FILES_COUNT# files has been rejected." Not at all string properties supports string formatting, see description of demanded property.