The first number is fixed-from override?

My friend is trying to make a mission. However, I have had trouble with this too. Why is the first "offer text" or "briefing" a number that cannot be changed. The dësc that is cited using that fixed number is non-existant. MC says that override required it to be fixed, but it is Nova I am trying to make a plug for. The only edit-able things are when the player refuses or accepts the mission and what the buttons say for "accept/refuse". And on completion, but not the offer. I seem to remember making this work, but I do not know how I changed the actual offer text.

The only descs that should be fixed for the missions are the 4000 series, from 4000-4999 for RIDs 128-1127. The 4000 series descs that are currently used in Nova should all appear in Nova Data 6. Creating a desc of the appropriate number in your plug >should< override the Nova Data 6 information, if that resource is being used.

This is assuming you're trying to make a plug for Nova. It appears that you are, but it's been a long day and I'm getting confused easily, so I hope that what I said above applies.

It is Nova. OK, that does make sense. Thanx.