MS Project - Can a task deadline have a dependency?

[Beartracks]

I'm trying to set up a Task Z that has a deadline that is NOT a calendar date, but rather could be expressed as "no later than 180 days after Task X completes." Basically, Task X has variable duration, so its end date is not fixed on the calendar -- and thus, the deadline for Task Z is not a fixed date either.

Can this kind of deadline constraint be set up in MS Project? I see where I can set a hard-and-fast DATE as a deadline, but I don't see a way to make a deadline that is dependent/variable based on the timing of another task in the project.

[RealityCheque]

1. Youre asking

Project to tell you an end dat for Z the task?

[Beartracks]

2. I'm hoping Project can create (and enforce) a VARIABLE deadline for Task Z...

... that is dependent on the end date of Task X.

I'm trying to represent a contractual obligation in the Project timeline, and the contract basically says "whenever Task X wraps up, you have 180 days to complete Task Z."

Elsewhere, I have another similar situation that's like, "When Task B ends, you have until 12 months from the date of Event A to complete Task C."

At issue is that none of these deadlines are driven by a calendar date.

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[RealityCheque]

3. What happens when you assign a predecessor?