CLI URL filter, change Site Access?

[BoDollis]

I am trying to determine how to change the Site Access of the new URL categories (cryptocurrency and grayware).  By default, they are Allow, and I want them to be Alert.  I can do this via CLI w/ the command from config mode below. 

set shared profiles url-filtering TEST-ONLY-02 alert grayware

What I do not understand is that once changed, I can not change it back via CLI w/o the Site Access being in the default of Allow

set shared profiles url-filtering TEST-ONLY-02 block grayware

Server error : block 'grayware' is already in use

I do not think I need to do this now, but I would like to know how to change a Site Action via CLI.

Ultimately, my current problem is changing the new crypto and grayware to block in many URL filtering profiles.

[reaper · Accepted solution]

you first need to delete the set command before you can enter a new set command for the same attribute

admin@fw# set shared profiles url-filtering Internet_URL alert grayware
[edit]                                                                                                                           
admin@fw# set shared profils url-filtering Internet_URL block grayware
Server error :  block 'grayware' is already in use
[edit]                                                                                                                           
admin@fw# delete shared profiles url-filtering Internet_URL alert grayware 
[edit]                                                                                                                           
admin@fw# set shared profiles url-filtering Internet_URL block grayware
[edit]