Research Tree Modding Help!

Ok, so I changed the layout of the TEC research tree.
it is supposed to go from
RESEARCHSUBJECT_HULLTECH0 - pos [0,0]
RESEARCHSUBJECT_HULLTECH1 - pos [1,0]
RESEARCHSUBJECT_HULLTECH2 - pos [2,0]
RESEARCHSUBJECT_HULLTECH3 - pos [3,0]* <My new one that i was planning to add

How do i addd such a thing? I put it in GameInfo folder when i finished it and add lines to the entity.manifest files but when i launch up game it is not there ? what am I doing wrong??
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TXT
entityType "ResearchSubject"
hudIcon "HUDICON_RESEARCHSUBJECT_HULLTECH0"
smallHudIcon "HUDICON_RESEARCHSUBJECT_HULLTECH0"
infoCardIcon ""
NameStringID "IDS_RESEARCHSUBJECT_HULLTECH0_NAME"
DescriptionStringID "IDS_RESEARCHSUBJECT_HULLTECH0_DESCRIPTION"
researchWindowLocation
    block 0
    pos [ 3 , 0 ]
ResearchField "Combat"
Prerequisites
    NumResearchPrerequisites 1
    ResearchPrerequisite
        Subject "RESEARCHSUBJECT_HULLTECH2"
        Level 2
MinimumArtifactLevel -1
BaseUpgradeTime 75.000000
PerLevelUpgradeTime 5.000000
BaseCost
    credits 1500.000000
    metal 250.000000
    crystal 375.000000
PerLevelCostIncrease
    credits 150.000000
    metal 50.000000
    crystal 80.000000
Tier 4
onlyWorksIfTierLabsExist FALSE
MaxNumResearchLevels 2
priority 1.000000
researchBoolModifiers 0
researchFloatModifiers 2
researchModifier
    modifierType "HullPointsMaxAdjustment"
    baseValue 0.000000
    perLevelValue 0.06250000
researchModifier
    modifierType "HullPointsRegenAdjustment"
    baseValue 0.000000
    perLevelValue 0.0250000
artifactPicture ""
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(im thinking the hudicon and description are conflicting somehow? probably wrong.. dont have anything to change to atm.)