Inventing gunpowder

Hi, it seems that every time I play a game of Medieval 2 I never seem to make it to the gunpowder era so I thought I changed the date for when gunpowder was invented. But its not working out I edited the descr_events and put an 80 next to gunpowder_invented and instead it was invented on turn 40. What am I doing wrong? any advice would be very helpful.

The number you are editing is "years" from start. Since (unmodded) 1 turn equals 2 years, you have to account for it.

Examples:
I think the Mongols are around "128"-- whch means turn 64
Gunpowder is "210"-- or turn 105
Etc.

Of course there are often two numbers to give a "range" for something can happen.