NPC Sequence animation reset, How to fix? (SFME)

Hello everyone.
I need that NPC would sit on the bench, I ask him SetSequence, he sits down, but if I’m going some distance animation reset
but if i’ll stand near, he will sitting forever
[video=youtube_share;AQXLngBOuaw]http://www.youtube.com/watch?v=AQXLngBOuaw&feature=youtu.be[/video]

Sorry for my English