Time difference SystemTime and FTP filetime

Dim( file_time, datetime )
Dim( sys_time, datetime, "@T"yyyy-mm-dd hh:mm:ss"")
Dim( seconds, number )
Dim( file_is_old, boolean )

FTPFileDateTime( ..., ... file_time)
DateTimeDiff( sys_time, file_time, seconds )
IsGreater( seconds, 60, file_is_old )
If(file_is_old, SEND_ALERT, DO_NEXT )
SEND_ALERT:
...
DO_NEXT:
...

: Support good afternoon,

: I'm struggeling with the JAL scripting to find out
: the difference in seconds between the time of an
: FTPfile (FTPFileDateTime I suppose) and the system
: time (Now ?). Do you have any suggestions ?

: It is for a script that has to check wether on the
: FTP site there are still files that are present
: since more then let's say 1 hour. Another script
: should have taken them and in case the files are
: still there an alert has to be sent to the
: administrator.

: Thanks for helping
: Robbert