Error Building_getitem

[LearningRO]

prontera,137,111,5	script	Maurel	604,{
// January ~ December Item Lists
setarray .@ItemID[0],7539,5022,512,607,608,7539,5022,512,607,608,7539,5022;
setarray .@Amount[0],10,10,10,10,10,10,10,10,10,10,10,10;
if( #MonthlyReward != gettime(DT_MONTH) ){
getitem .@ItemID[gettime(DT_MONTH)],.@Amount[gettime(DT_MONTH)];
set #MonthlyReward,gettime(DT_MONTH);
mes "You have grant an item for this month.";
}else{
mes "You cant take a reward again this month.";
}
close;
}

Btw I use Emistry script but when talk to npc i didnt get the item 
 

and get error like this in console
 

[Error]: buildin_getitem: Nonexistant item 0 requested.

 

[Start_]

Try

prontera,137,111,5	script	Maurel	604,{
	// January ~ December Item Lists
	setarray .@ItemID[0],7539,5022,512,607,608,7539,5022,512,607,608,7539,5022;
	setarray .@Amount[0],10,10,10,10,10,10,10,10,10,10,10,10;
	if(#MonthlyReward != gettime(DT_MONTH)){
		getitem .@ItemID[gettime(DT_MONTH)-1],.@Amount[gettime(DT_MONTH)-1];
		#MonthlyReward = gettime(DT_MONTH);
		mes "You have grant an item for this month.";
	}
	else
	mes "You cant take a reward again this month.";
	close;
}

 

[LearningRO]

Thanks Bro