(VX) Drinking, but not getting drunk., Another event issue. Options

[Quackadoos]

Hi.
I've been using the Alcoholism and Drinking tutorial to allow my characters to get drunk when in a pub. I've already had to work around being unable to have the alcohol as a consumable item by making an event that only allows you to drink at a table. Now I know that the table event works, but as the character consumes alcohol he doesn't get drunk. The problem must lie my Common Event because the table event definately works, so here's the code I've been using;

CODE

@>Conditional Branch: Variable [0004: Drunk] >= 50
  @>Tint Screen: (-25,-25,-25,68), @60, Wait
  @>
: Else
  @>
: Branch End

I have four different Conditional Branches in this Common Event, each with a different variable number (e.g. 50, 100 e.t.c) for the different stages of drunkness. The variable itself is set to increase when you have a drink at the table. What am I missing? Any help would be much appreciated.