Scripts for beginners.

A. Well, it seems that point number 3 did have an effect. I'm afraid I'll have to make the script more complex – the gaz task should be placed in the objectives tab, as a general task, but initially invisible. It should be triggered by OBJECT_TOUCH_TRIGGER with a house, and the house should have its standard functions disabled (first, display a message, then – the task).
But first, I need to check – if I set gaz as a general and accessible task from the very beginning, will it work?