I_NumberUnitsInSettlement

Does this condition actually work as advertised?

Code:

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Identifier:              I_NumberUnitsInSettlement
Trigger requirements:   
Parameters:              settlement, unit type (UNIT_DESCRIPTION.id), logic token, quantity
Sample use:              I_NumberUnitsInSettlement Tarquinii roman_city_militia < 5
Description:            How many units are in the settlement?
Battle or Strat:        Strat
Class:                  NUMBER_UNITS_IN_SETTLEMENT
Implemented:            Yes
Author:                  Guy
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I've been trying to make use of it in export_descr_ancilliaries.txt and I haven't been able to get it to come out as true.