How to make the Advanced Refiner refine with 100% success

[Diana]

How to make the Advanced Refiner refine with 100% success No Damage ?

The Script : 

payon,157,146,6	script	Suhnbi#cash	85,{
	disable_items;
	mes "[Suhnbi]";
	mes "I am the Armsmith";
	mes "I can refine all kinds of weapons,";
	mes "armor and equipment, so let me";
	mes "know what you want to refine.";
	next;

	setarray .@indices[1], EQI_HEAD_TOP, EQI_ARMOR, EQI_HAND_L, EQI_HAND_R, EQI_GARMENT, EQI_SHOES, EQI_ACC_L, EQI_ACC_R, EQI_HEAD_MID, EQI_HEAD_LOW;
	for(set .@i,1; .@i<=10; set .@i,.@i+1) {
		if (getequipisequiped(.@indices[.@i])) {
			set .@menu$, .@menu$ + F_getpositionname(.@indices[.@i]) + "-[" + getequipname(.@indices[.@i]) + "]";
			set .@equipped,1;
		}
		set .@menu$, .@menu$ + ":";
	}
	if (.@equipped == 0) {
		mes "[Suhnbi]";
		mes "I don't think I can refine any items you have...";
		close;
	}
	set .@part, .@indices[ select(.@menu$) ];

	if (!getequipisequiped(.@part)) //custom check
		close;
	if (!getequipisenableref(.@part)) {
		mes "[Suhnbi]";
		mes "Go find another Blacksmith. You can't refine this thing.";
		close;
	}
	if (getequiprefinerycnt(.@part) >= 10) {
		mes "[Suhnbi]";
		mes "Hmm... someone perfected this already. I don't think I can work on it further.";
		close;
	}

	// Make sure you have the neccessary items and Zeny to refine your items
	// Determines chance of failure and verifies that you want to continue.
	switch(getequipweaponlv(.@part)) {
		case 1: callsub S_RefineValidate,1,7620,50,.@part; break;
		case 2: callsub S_RefineValidate,2,7620,200,.@part; break;
		case 3: callsub S_RefineValidate,3,7620,5000,.@part; break;
		case 4: callsub S_RefineValidate,4,7620,20000,.@part; break;
		default: callsub S_RefineValidate,0,7619,2000,.@part; break;
	}

	mes "[Suhnbi]";
	mes "Clang! Clang! Clang!";
	if (getequippercentrefinery(.@part) > rand(100) || getequippercentrefinery(.@part) > rand(100)) {
		successrefitem .@part;
		next;
		emotion e_no1;
		mes "[Suhnbi]";
		mes "There you go! It's done.";
		mes "It's been a while since I've made such a fine "+((getequipweaponlv(.@part))?"weapon":"armor")+". You must be happy because it has become stronger!";
		close;
	}
	failedrefitem .@part;
	next;
	emotion (!rand(5))?e_cash:e_omg;
	mes "[Suhnbi]";
	mes "Uuuuuuuuuummmmmph!!!";
	next;
	mes "[Suhnbi]";
	mes "...";
	mes ".....";
	mes ".......Huhuhuhuhu~";
	mes "........It was your choice and my ability, no regret.";
	close;

S_RefineValidate:
	.@weapon_lvl = getarg(0);
	.@item_req = getarg(1);
	set .@price, getarg(2);

	// If the VIP system is enabled, the prices for non-VIP players are considerably higher.
	if (VIP_SCRIPT && !vip_status(1)) {
		switch(.@weapon_lvl){
			case 0: set .@price, .@price * 10; break;
			case 1: set .@price, .@price * 40; break;
			case 2: set .@price, .@price * 50; break;
			case 3: set .@price, .@price * 2; break;
			case 4: set .@price, .@price * 2; break;
		}
	}

	mes "[Suhnbi]";
	if (.@weapon_lvl)
		mes "You want to refine a level "+ .@weapon_lvl +" weapon?";
	mes "To refine that, you'll need to have one ^ff9999"+ getitemname(.@item_req) +"^000000 and "+ .@price +" zeny.";
	mes "Would you like to continue?";
	next;
	if(select("Yes:No") == 1) {
		if (getequippercentrefinery(getarg(3)) < 100) {
			if (.@weapon_lvl) {
				mes "[Suhnbi]";
				mes "Wow!!";
				mes "This weapon probably";
				mes "looks like it's been refined...";
				mes "many times...";
				mes "It may break if";
				mes "you refine it again.";
				next;
				mes "And if it breaks,";
				mes "you can't use it anymore!";
				mes "All the cards in it and the properties ^ff0000will be lost^000000!";
				mes "^ff0000Besides, the equipment will break!^000000";
				mes "Are you sure you still want to continue?";
				next;
				if(select("Yes:No") == 2) {
					mes "[Suhnbi]";
					mes "Good.";
					mes "Because if the weapon breaks from unreasonable refining, then I get a bad mood, too.";
					close;
				}
			} else {
				mes "[Suhnbi]";
				mes "Giggle. Giggle. Oh, you have guts, daring to refine this.";
				mes "You know it's pretty risky, don't you?";
				next;
				mes "If your defensive equipment is broken, you'll never be able to use it again.";
				mes "Even your cards and your modifications will ^ff0000completely disappear^000000.";
				//mes "Everything will disappear. As in... GONE!";
				mes "Do you really wish to continue?";
				next;
				if(select("Yes:No") == 2) {
					mes "[Suhnbi]";
					mes "What nonsense. You waste my precious time.";
					mes "Get lost, punk.";
					close;
				}
			}
		}
		if (countitem(.@item_req) > 0 && Zeny > .@price) {
			delitem .@item_req,1;
			set Zeny, Zeny - .@price;
			return;
		}
		mes "[Suhnbi]";
		mes "Are these all you have?";
		mes "I'm very sorry, but I can't do anything without all the materials. Besides, I deserve some payments for my work, don't I?";
		close;
	}
	mes "[Suhnbi]";
	mes "I can't help it even if you're not happy about it...";
	close;
}

 

[Emistry]

	mes "[Suhnbi]";
	mes "Clang! Clang! Clang!";
	if (getequippercentrefinery(.@part) > rand(100) || getequippercentrefinery(.@part) > rand(100)) {
		successrefitem .@part;
		next;
		emotion e_no1;
		mes "[Suhnbi]";
		mes "There you go! It's done.";
		mes "It's been a while since I've made such a fine "+((getequipweaponlv(.@part))?"weapon":"armor")+". You must be happy because it has become stronger!";
		close;
	}
	failedrefitem .@part;
	next;
	emotion (!rand(5))?e_cash:e_omg;
	mes "[Suhnbi]";
	mes "Uuuuuuuuuummmmmph!!!";
	next;
	mes "[Suhnbi]";
	mes "...";
	mes ".....";
	mes ".......Huhuhuhuhu~";
	mes "........It was your choice and my ability, no regret.";
	close;

change to

	mes "[Suhnbi]";
	mes "Clang! Clang! Clang!";
	successrefitem .@part;
	next;
	emotion e_no1;
	mes "[Suhnbi]";
	mes "There you go! It's done.";
	mes "It's been a while since I've made such a fine "+((getequipweaponlv(.@part))?"weapon":"armor")+". You must be happy because it has become stronger!";
	close;

 

[Diana]

Thanks @Emistry 

But theres no change ingame NPC 

the same page and the same error ?