Thanks !!, it works perfectly. Now i have new question:
It's possible to make NPC stop if it the Character collides with him?
Yes, but it's a bit more complicated as you need scripting to check if the character enters a radius that you define for the npc. There's a script I wrote a while ago that you could edit for this purpose
here. It needs some edits though as it's currently for checking if mouse cursor is inside of a specified radius, but it shouldn't be too hard to modify - it's late here at the minute though & I've not got my thinking cap on. Sorry.