I need help with my embellishment scripts NPC WALKS

[kevo89]

prontera.gat,155,203,3	script	Bird#1::Vmp	2727,{
	// -o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o- \\
	// Header - Please include this header in your Walk Enabled NPCs to control distance errors
	// Set the status to "In Use" (multiplayer)
	   set .inUse, .inUse + 1;
	// Reset the current lock time while the user talk with the NPC
	   set .curLockT,0;
	// -o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o- \\
	

OnInit:
	// Define the coordinates for this NPC (you can use 0,400/0,400 for a full map movement)
	// Horizontal coordinates
	set .minX,137;
	set .maxX,177;
	// Vertical coordinates
	set .minY,184;
	set .maxY,223;
	// Define the min/max distance for each movement
	set .minD,0;
	set .maxD,10;
	// Define stopped steps before change the status back to "Free to walk"
	set .maxLock,30;
	// Set the speed for this NPC (50=Faster / 250=Slower)
	npcspeed 230;
	
	// Start the movements
	initnpctimer;
	end;
	
// Set here the time for the next movement (ms)
OnTimer2000:
	if (.inUse) {
		set .curLockT, .curLockT + 1;
		if (.curLockT > .maxLock) set .inUse, 0;
	} else {
		getmapxy .map$,.x,.y,1;
		set .curX, callfunc("NPCWalk",.minX, .maxX,.minD,.maxD,.x);
		set .curY, callfunc("NPCWalk",.minY, .maxY,.minD,.maxD,.y);
		npcwalkto .curX, .curY;
	}
	stopnpctimer;
	initnpctimer;
	end;
}

prontera.gat,155,203,3	duplicate(Vmp)	Bird#2	2727
prontera.gat,155,203,3	duplicate(Vmp)	Guard#3	2726
//prontera.gat,155,203,3	duplicate(Vmp)	Bird#4	2123
//prontera.gat,147,203,3	duplicate(Vmp)	Bird#5	2123
//prontera.gat,147,203,3	duplicate(Vmp)	Bird#6	2123
//prontera.gat,147,203,3	duplicate(Vmp)	Bird#7	2123
//prontera.gat,156,212,3	duplicate(Vmp)	Bird#8	2123
//prontera.gat,156,212,3	duplicate(Vmp)	Bird#9	2123
//prontera.gat,156,212,3	duplicate(Vmp)	Bird#10	2123
//prontera.gat,164,203,3	duplicate(Vmp)	Bird#11	2123
//prontera.gat,164,203,3	duplicate(Vmp)	Bird#12	2123
//prontera.gat,164,203,3	duplicate(Vmp)	Bird#13	2123
//prontera.gat,174,201,3	duplicate(Vmp)	Bird#14	2123
//prontera.gat,174,201,3	duplicate(Vmp)	Bird#15	2123
//prontera.gat,174,201,3	duplicate(Vmp)	Bird#16	2123
//prontera.gat,137,206,3	duplicate(Vmp)	Bird#17	2123
//prontera.gat,137,206,3	duplicate(Vmp)	Bird#18	2123
// -o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o- \\
//                                 END SAMPLE                                    \\
// -o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o- \\

// Function to calculate one single coordinate
function	script	NPCWalk	{
	set .CP, getarg(4);
	set .DST, rand(getarg(2),getarg(3));
	if (rand(2))
		set .CP, .CP + .DST;
	else
		set .CP, .CP - .DST;
	if (.CP < getarg(0)) set .CP, .CP + .DST;
	if (.CP > getarg(1)) set .CP, .CP - .DST;
	return .CP;
}

I'm sorry I'm interested in a script that serves as an ornament I liked in eathena but I can't make it work could you support me

Edited March 11, 2020 by kevo89

[LearningRO]

get any error on console?