lftp syntax question

[Yard, John]

I have an lftp app on RH 4 .

I need to run ftps over port 15, PASV,
port range 10020-10029 .... 

I am not connecting .

My code is :

/usr/local/bin/lftp -d -f /usr/local/bin/lockused.input

viper:/usr/local/bin] # cat lockused.input
debug
#set -a
set ftp:port-ipv4 21
set ftp:passive-mode on
set ftp:port-range 10020-10029
open ftps://testfps.xxxx-incv.com -u XXXX, 5366989
put -a 6354635.DAT
dir
exit

Connection is rejected over port 990 by the host .

Why 990 ? Why not 21 , or my port range?

Any suggestions welcome,

JYard
UCLA