sftp rm wildcard help

[rokay]

Hi,

We just installed ssh2. I am running the sftp command with a batch file and I need delete a few files that start with "myfile" as follows:

sftp -B mycommands myboxname

mycommands file:
rm myfile*
quit

sftp doesn't seem to recognize the wildcard.
The name of myfile* changes so I cannot hardcorde.

Do you have any recommendations?

Thanks in advance.