In my answer there's already the loop, you just had to copy/paste to replace, but whatever:
function script CustomBox {
set .@Total,65;
setarray .@P1[0],90,983,5; //Black Dyestuff
setarray .@P2[0],91,981,5; //Violet Dyestuff
setarray .@P3[0],93,13517,1; //YGGBOX
setarray .@P4[0],94,12534,1; //YGGSEED
setarray .@P5[0],80,3016,1; //HOKAGEHAT
setarray .@P6[0],81,3696,1; //LUFFYHAT
setarray .@P7[0],85,740,10; //PUPPET
setarray .@P8[0],89,720,10; //AQUAMARINE
setarray .@P9[0],87,14176,1; //ENRICHEDELU
setarray .@P10[0],88,14177,1; //ENRICHEDORI
setarray .@P11[0],60,50005,1; //PREMIUMCREDIT
setarray .@P12[0],70,3676,1; //HOLLOWMASK
setarray .@P13[0],75,3678,1; //ROBOEARS
setarray .@P14[0],50,19130,1; //MAGICEYES
setarray .@P15[0],51,5184,1; //CAPTAINSHAT
setarray .@P16[0],52,8327,1; //EVOLVED POOPOO
setarray .@P17[0],53,3782,1; //DARKLORDHELM
setarray .@P18[0],54,18534,1; //FANCYPHANTOM
setarray .@P19[0],55,5325,1; //ROBOEYE
setarray .@P20[0],51,19176,1; //FALLENANGELBLESSING
setarray .@P21[0],56,5517,1; //HAWKEYES
setarray .@P22[0],57,3661,1; //DEVILING WINGS
setarray .@P23[0],58,3000,1; //ANGELINGWINGS
setarray .@P24[0],59,3001,1; //ARTICWINGS
setarray .@P25[0],60,3003,1; //DEMONWINGS
setarray .@P26[0],61,3005,1; //GARGOYLEWINGS
setarray .@P27[0],62,3007,1; //PHOENIXWINGS
setarray .@P28[0],63,3008,1; //TORNWINGS
setarray .@P29[0],64,3002,1; //BLACKBUTTERFLYWING
setarray .@P30[0],65,3009,1; //WHITEBUTTERFLYWING
setarray .@P31[0],65,2726,1; //ICARUSWINGS
setarray .@P32[0],40,7828,1; //BRAVERYBADGE
setarray .@P33[0],41,45078,1; //NEKOHOOD
setarray .@P34[0],42,20073,1; //MVPHAT
setarray .@P35[0],43,rand(45066,45072),1; //BUNDANNA
setarray .@P36[0],40,rand(45099,45101),1; //RUNES
setarray .@P37[0],40,45084,1; //BLACKRUNES
setarray .@P38[0],40,rand(45026,45028),1; //BLACKAURA-PINK
setarray .@P39[0],40,rand(45062,45065),1; //BLACKAURA-WHITE
setarray .@P40[0],20,rand(3515,3526),1; //DRAGONWEAPON
setarray .@P41[0],20,28605,1; //DRAGONBOOK
setarray .@P42[0],20,3536,1; //DRAGONSHURIKEN
setarray .@P43[0],15,rand(45211,45214),1; //FUSHIONVALKYIRE
setarray .@P44[0],10,rand(8032,8033),1; //DIABLOSPIRIT
setarray .@P45[0],10,20727,1; //BRILLIANTGOLDEN
setarray .@P46[0],9,82517,1; //INVOKERCAPE
setarray .@P47[0],2,4549,1; //UPDMAYA
setarray .@P48[0],3,4359,1; //SINXCARD
setarray .@P49[0],3,4357,1; //LKCARD
setarray .@P50[0],3,4361,1; //WSCARD
setarray .@P51[0],3,4363,1; //HIGHPRIESTCARD
setarray .@P52[0],3,4365,1; //HIGHWIZARDCARD
setarray .@P53[0],5,4128,1; //GTB
setarray .@P54[0],7,3742,1; //GOLDENSWORDAURA
setarray .@P55[0],4,40016,1; //DRAGONRING
setarray .@P56[0],5,rand(40006,40012),1; //DRAGONSET
setarray .@P57[0],1,rand(4480,4504),1; //SEALED
setarray .@P58[0],1,rand(4535,4544),1; //SEALED
setarray .@P69[0],100,7227,rand(1,5); // TCG
setarray .@P60[0],100,7227,rand(5,10); // TCG
setarray .@P61[0],95,6767,rand(1,10); //MVPCOIN
setarray .@P62[0],96,3100,rand(1,10); //CREDIT
setarray .@P63[0],97,7608,rand(1,5); //LOTTITICKET
setarray .@P64[0],96,6420,rand(1,10); //HOURLYCOIN
setarray .@P65[0],2,rand(40033,40034),1; //VIPBOX
for(.@count = 0;.@count < 10;.@count++){
do{
set .@i, rand(1,.@Total);
}while( rand(1,100) > getd(".@P"+.@i+"[0]") );
for(set .@j,1; .@j<getarraysize(getd(".@P"+.@i)); set .@j,.@j+2)
{
getitem getd(".@P"+.@i+"["+.@j+"]"), getd(".@P"+.@i+"["+(.@j+1)+"]");
if (!.@k[0])
{
set .@gz,.@i;
setarray .@k[0], getd(".@P"+.@i+"["+.@j+"]"), getd(".@P"+.@i+"["+(.@j+1)+"]");
break;
}
}
if( .@gz && .@gz <= 10 ) // 10% equal or below will announce
announce "Congratulations! "+strcharinfo(0)+" just received "+getitemname(.@k[0])+" x "+.@k[1]+" From Supply Box",0;
specialeffect2 248;
}
end;
}