How can I change target of Alias wich is NONE?

You could use http://www.creationkit.com/index.php?title=ForceRefIfEmpty_-_ReferenceAlias, or http://www.creationkit.com/index.php?title=ForceRefTo_-_ReferenceAlias. Or you can restart the quest and give it another chance to fill it's alias'

Thank. You helped me very well

What is about LocAliases?

if !YourLocationAlias
 ForceLocationTo(YourNewLocationAlias)
endif

http://www.creationkit.com/index.php?title=ForceLocationTo_-_LocationAlias

It will be my final question: what do I must write in "()" if my Alias havent current target, I marked "Find Matching Reference"?

What do you need to do? Do you need to know whenever the alias is empty? Or you need to fill it with a specific location if it failed?

It will probably be easier to use the correct alias conditions so you don't have to use ForceLocationTo() because that needs a predefined variable.

I cant use ForseLocationTo becose ForceLocationTo(Location akNewLocation) need specify specific Location. But target of my LocAlias is random Location, not specific. I need to status of my LocAlias change from NONE in one moment

If you cannot restart that quest to refill that alias I would suggest running a secondary quest every time you need a location value then forcing the alias from your secondar quest into your real alias.

I use this method to find interesting things near the player whenever my events get sent.

How do I need fill my Aliases throught secondary Quest concretely?