Why I cannot add a calculated number field not as Custom Field in Portfolio for Jira?

[Thorsten Kamann]

Hi,

I have a calculated number field as Custom Field in Jira. Now I need to add this field to the scope table in Portfolio for Jira. But in the configuration area for Custom Fields in my plan Portfolio for Jira told me that this kind of field isn't supported.

What is the support about? I think it need only to show the value...not more and not less. What is the reason for this?

Thanks

Thorsten