่How add new effect Costom

[Megathronzz]

my script 

{
    Id: 20487
    AegisName: "Waltz_of_The_Flowers"
    Name: "Waltz of the Flowers"
    Type: 5
    Loc: 4096
    View: 3000
    OnEquipScript: <" sc_start SC_FLORAL_WALTZ, -1, 0; ">
    OnUnequipScript: <" sc_end SC_FLORAL_WALTZ; ">
},