Item script for changebase

[AinsLord]

So I made and item script that when equipped it will change your class to 3rd job

  - Id: 2301
    AegisName: Cotton_Shirt
    Name: Cotton Shirt
    Type: Armor
    Buy: 10
    Weight: 100
    Defense: 1
    Locations:
      Armor: true
    ArmorLevel: 1
    Refineable: true
    EquipScript: |
      changebase roclass(eaclass()|EAJL_2_1|EAJL_THIRD);
    UnEquipScript: |
      changebase Class;

this item script is 3rd job

how can I make this base class will turn Baby like baby crusader or baby royal guard

thank you