Doubt about jerarquic dimension and null in a value

[#1]

Hi i have this for example

ID   adress   Date1      Date2

1     233232             10/10/12     10/10/12

2    2312312            10/11/14     10/6/12

3    12312123          25/10/12       5/10/12

4       44444            

5    1231233       

my expression is a sum of id (number of propertys)

I have "status". This is Date 2 - Date 1 with and if (i do this in the code) and because the number they have different names like "ok", "expired", etc.

And adress

My dimmension is a jerarquic dimmension Status - Adress

The problem is that when i have null values in the data in the graph i have this "-"

I'm thinking about a isnot null or something similar but how i do this in the jerarquic dimmension?

thank you!

[Gysbert_Wassenaar]

See this document: IntervalMatch and Slowly Changing Dimensions