creating vs. defining an array

[vacuit]

I am getting the Error: Object reference not set to an instance of an object. for this code:

Class udtYear
Public N As Long 'total population size
...
End Class

Class udtRun
Public Yr(0 To PROJYR - MINYR) As udtYear 'year -1 of model simulation
End Class

Sub CrustaceanIBM()
...
Dim SimRun(0 To NumRuns - 1) As udtRun 'output of each simulation run
...
SimRun(r).Yr(0).N = N0

however I can't assign SimRun As NEW udtrun because SimRun is an array.

Any suggestions?

thanks
Amanda

[Killer42]

Dim SimRun(0 To NumRuns - 1) As udtRun 'output of each simulation run
SimRun(r).Yr(0).N = N0
however I can't assign SimRun As NEW udtrun because SimRun is an array.

Any suggestions?

How about...
Set SimRun(0) = New udtRun
and similarly for each occurrence of the array?
(I have no idea whether this will work.)