Well, I'll ask this on forum then

I start the game as normal and play mission Cesar Vialpando. But then, when the man told me to enter the garage in WIllowfield, the garage didn't open! No matter how much did I try, how hard did I smash the wall, the game's still not allow me to enter it, I need suggestions from you guys :(( P/S I'm playing Gta V San Andreas mod