I_MapName condition: does it work?

[Monkwarrior]

I'm trying to implement different scripts depending on the campaign to be played.
I found in docudemon_conditions one that could be useful:

Identifier:              I_MapName
Trigger requirements:    
Parameters:              map file name
Sample use:              not I_MapName world\maps\campaign\sons_of_mars\descr_strat.txt
Description:             The qualified file name of the current map relative to the data directory
Battle or Strat:         Either
Class:                   MAP_NAME
Implemented:             Yes
Author:                  Guy

I tried this in this way (export_descr_advice):

;------------------------------------------ ITW Campaign   

Trigger ITW_Campaign_Thread_Trigger
    WhenToTest SettlementSelected

    Condition I_LocalFaction carthage
          and I_MapName world\maps\campaign\Hispania_Cartago\descr_strat.txt

    AdviceThread ITW_Carthage_Campaign_Thread  0

Result: the advice didn't appear and, or course, the script was not launched.

Then, I tried the negative way:

;------------------------------------------ ITW Campaign   

Trigger ITW_Campaign_Thread_Trigger
    WhenToTest SettlementSelected

    Condition I_LocalFaction carthage
          and not I_MapName world\maps\campaign\imperial_campaign\descr_strat.txt

    AdviceThread ITW_Carthage_Campaign_Thread  0

Result: the advice appeared in all the campaigns, when carthage faction was selected.
I tried also using the full path (data\world\etc), but the result was the same.

Did anybody use this condition successfully?
Any other method to launch scripts selectively depending on the campaign?