Coect to server via lftp and delete files older than one day

0 down vote favorite I am using lftp to coect to a remote server as:

 lftp -u user,pass -e "echo 'hello' ;quit" host

What I want to do is to find and delete all the files in the root directory which are older than 1 day.

Initially I tried to find all files starting with a specific character as:

 find / -name 'A1*'

But I get an invalid command error. I checked the documentation of lftp and found out that the find command doesn't support searching with specific strings.

What would be the alteative?