Authorization Policy - URL Conticion - Query string

I'd like to define an Authorization Policy that executes an action if the URL contains the parameter  "passwordExpired=true".

I read at the documentation:

The URL query strings can also be used in comparisons. Select Regular Expression Match to implement it. For example, if you want to match against a query string parameter xyz, whose value is abc, you need to enter the following regular expression in the Data Entry field:

 ".*\?.*xyz=abc.*"

So, I created a policy with an URL condition that matches the regular expression:

 .*\?.*passwordExpired=true.*

So I expect it should evaluate true with the following URL:

https://acme.sspr.cat/sspr/private/ChangePassword?passwordExpired=true

I can't get it to work, and looking at the log, it seems it only evalutes the URL without the query parameter:

~~CO~2~Url(2506):no-param:acme.sspr.cat/.../ChangePassword~com.novell.nxpe.condition.NxpeOperator@regular-expression-matches~(0):hidden-param:hidden-value:~~NOT~True(69)

Anyone know if this should work?