Setting Custom Aliase

Hi,
I was trying to set "regen" command as alias "re" but when i type "re" then, command line asking me type some number as "VALOR DE THICKNESS"
I think it's related with "fillet" command but there was no duplication for "RE" alias after I checked Aliases setting in Customize menu and pgp file in local path.

Please advise if have one has same problem.
Thank you,