Replying to Cops and Hand rails

So I went to hit a dope kink rail last night at about 11, we got everything set up, lights everything seemed perfect but right when my friend went to hit the rail security pulled up and said get out prolly 15 times (this is at a zoo btw) so we pack everything up and the guy is still telling us to get out, when i was getting in my car i noticed he was writing my license plate number down, so we left no big deal....... Later that night at about 1:00 there was a cop in my house telling me that he could arrest me for tresspassing and vandalism i asked him what we vandalized he said we scraped the paint of the rail and they would have to repaint the rail but we never got to hit the rail, after the cop talked for 5 min in my house he complimented the jump we built, and said tell your friends cause im gonna be watchin the rail personally.