Sorry, I don't think there is. VALVe didn't expose the generic SetAnimation function from the CBaseAnimating class to Squirrel, so I can check if it's finished its main animation and change its bodygroups but not start a new sequence playing. 
Sorry, I don't think there is. VALVe didn't expose the generic SetAnimation function from the CBaseAnimating class to Squirrel, so I can check if it's finished its main animation and change its bodygroups but not start a new sequence playing. 