Is there anyone can help? Actually I can write a short perl script to do this, but I try to do with pure unlang. So.if someone can told me whether this purpose can be done with only unlang, I can save lots of time on this endless trial. Lol In fact, the reason why I need this function is that sometimes we treat some attributes as temporary variable for generating another attribute value pair. Then erase it before sending request or reply out. So I am wondering would majority of FR user do this things like this? I personally pretty love this way for some policy processing, and that how FreeRADIUS to be powerful and flexible I think. So I believe there might be somebody else probably need this. Alright.just free chat. Cheers, Okis.