How enable to plant jungle ?

[Lochwein]

Hello, I am new to modding Civ. I would like to enable the ability to plant jungle for my personalized civ.

I tried using the modifier MODIFIER_PLAYER_ADJUST_FEATURE_UNLOCK, similar to the one used by Vietnam to enable its builders to plant forests. It works if you want to redefine a modifier to enable planting forests before Conservation (I included the corresponding code at the end).
I noticed that forests have the attribute "AddCivic" in Features.xml with the value "CIVIC_CONSERVATION". So, I chose a civic for jungle in the same way, but it does not work either.
I found that there is a UnitOperations linked to planting forests, so I created a UnitOperations based on that and also created the corresponding UnitOperations.artdef. It is supposed to be the same with FOREST resplace by JUNGLE even if I used the Asset Editor. However, this approach did not give satisfaction.

Does anyone have an idea about how to proceed?

Spoiler code :

-- GameData1
-- Author: louis
-- DateCreated: 4/16/2024 9:35:32 PM
--------------------------------------------------------------
INSERT INTO Types
        (Type,                                            Kind               )
VALUES  ('TRAIT_CIVILIZATION_MTGLL_ANCESTRAL_FORESTS',    'KIND_TRAIT'       ),
        ('UNITOPERATION_MTGLL_PLANT_JUNGLE',            'KIND_UNITOPERATION' );

INSERT INTO Traits
        (TraitType,                                        Name,                                                    Description                                                     )
VALUES  ('TRAIT_CIVILIZATION_MTGLL_ANCESTRAL_FORESTS',    'LOC_TRAIT_CIVILIZATION_MTGLL_ANCESTRAL_FORESTS_NAME',    'LOC_TRAIT_CIVILIZATION_MTGLL_ANCESTRAL_FORESTS_DESCRIPTION'    );

INSERT INTO CivilizationTraits
        (CivilizationType,                    TraitType                                      )
VALUES  ('CIVILIZATION_MTGLL_MONO_GREEN',    'TRAIT_CIVILIZATION_MTGLL_ANCESTRAL_FORESTS'    );



INSERT INTO UnitOperations
        (OperationType,                         VisibleInUI,      HoldCycling,      CategoryInUI,    Icon,                                Description                                           )   
VALUES  ('UNITOPERATION_MTGLL_PLANT_JUNGLE',    1,                1,                'BUILD',        'ICON_UNITOPERATION_PLANT_FOREST',    'LOC_UNITOPERATION_MTGLL_PLANT_JUNGLE_DESCRIPTION'    );


INSERT INTO TraitModifiers
        (TraitType,                                        ModifierId                                                            )
VALUES  ('TRAIT_CIVILIZATION_MTGLL_ANCESTRAL_FORESTS',    'MODIFIER_MTGLL_ANCESTRAL_FORESTS_PLANT_JUNGLE_MEDIEVAL_FAIRES'        );


INSERT INTO Modifiers
        (ModifierId,                                                        ModifierType                              )
VALUES  ('MODIFIER_MTGLL_ANCESTRAL_FORESTS_PLANT_JUNGLE_MEDIEVAL_FAIRES',  'MODIFIER_PLAYER_ADJUST_FEATURE_UNLOCK'    );


INSERT INTO ModifierArguments
        (ModifierId,                                                        Name,            Value                    )
VALUES  ('MODIFIER_MTGLL_ANCESTRAL_FORESTS_PLANT_JUNGLE_MEDIEVAL_FAIRES',  'FeatureType',    'FEATURE_JUNGLE'         ),
        ('MODIFIER_MTGLL_ANCESTRAL_FORESTS_PLANT_JUNGLE_MEDIEVAL_FAIRES',  'CivicType',      'CIVIC_MEDIEVAL_FAIRES'  );
        

UPDATE Features SET AddCivic='CIVIC_MEDIEVAL_FAIRES' WHERE FeatureType='FEATURE_JUNGLE';   


INSERT INTO TraitModifiers
        (TraitType,                                        ModifierId                                                        )
VALUES  ('TRAIT_CIVILIZATION_MTGLL_ANCESTRAL_FORESTS',    'MODIFIER_MTGLL_ANCESTRAL_FORESTS_PLANT_FOREST_MEDIEVAL_FAIRES'    );

INSERT INTO Modifiers
        (ModifierId,                                                        ModifierType                              )
VALUES  ('MODIFIER_MTGLL_ANCESTRAL_FORESTS_PLANT_FOREST_MEDIEVAL_FAIRES',  'MODIFIER_PLAYER_ADJUST_FEATURE_UNLOCK'    );

INSERT INTO ModifierArguments
        (ModifierId,                                                         Name,             Value                    )
VALUES  ('MODIFIER_MTGLL_ANCESTRAL_FORESTS_PLANT_FOREST_MEDIEVAL_FAIRES',    'FeatureType',    'FEATURE_FOREST'         ),
        ('MODIFIER_MTGLL_ANCESTRAL_FORESTS_PLANT_FOREST_MEDIEVAL_FAIRES',    'CivicType',    'CIVIC_MEDIEVAL_FAIRES'    );

<?xml version="1.0" encoding="UTF-8" ?>
<AssetObjects..ArtDefSet>
    <m_Version>
        <major>1</major>
        <minor>0</minor>
        <build>0</build>
        <revision>0</revision>
    </m_Version>
    <m_TemplateName text="UnitOperations"/>
    <m_RootCollections>
        <Element>
            <m_CollectionName text="UnitOperation"/>
            <m_ReplaceMergedCollectionElements>false</m_ReplaceMergedCollectionElements>
            <Element>
                <m_Fields>
                    <m_Values>
                        <Element class="AssetObjects..StringValue">
                            <m_Value text="PLANT_JUNGLE"/>
                            <m_ParamName text="Activity"/>
                        </Element>
                        <Element class="AssetObjects..StringValue">
                            <m_Value text=""/>
                            <m_ParamName text="TargetType"/>
                        </Element>
                        <Element class="AssetObjects..StringValue">
                            <m_Value text="ACTIVITY_DIG"/>
                            <m_ParamName text="DefaultTargetActivity"/>
                        </Element>
                    </m_Values>
                </m_Fields>
                <m_ChildCollections/>
                <m_Name text="UNITOPERATION_MTGLL_PLANT_JUNGLE"/>
                <m_AppendMergedParameterCollections>false</m_AppendMergedParameterCollections>
            </Element>
        </Element>
    </m_RootCollections>
</AssetObjects..ArtDefSet>