Why is this happening?

[xRevq]

I try to enter a new NPC in my client.cs file and it works but when i put the NPC in a map and try to click on it the NPC is automatically a Shop NPC not a NPC that can talk with the user and interact. Her is an example of what i'm putting in:

if (CureentNPC == 420000001)
			{
			    SendPacket(General.MyPackets.NPCSay("Testing"));
			    SendPacket(General.MyPackets.NPCLink("Done", 1));
			    SendPacket(General.MyPackets.NPCLink("Still DOne", 255));
			    SendPacket(General.MyPackets.NPCSetFace(30));
			    SendPacket(General.MyPackets.NPCFinish());
			}

remember this is only an example not exactly what i want in my NPC dialogue i'm just trying to get it to work thanks to all that reply