How to implement "FieldNullCount"?

[#1]

Hi experts,

I'm try to make a table, whose rows are the field names of my data, and columns are statistics of fields.

I build a List Box with $Field as the field, and FieldValueCount($Field) as expression, which well displayed the distinct count of each field.

Now I want to display number of nulls in each field, but there is no "FieldNullCount" function.

Is there any way to implement one by expression?

Thank you!

[RonaldDoes]

Have you taken a look at the sheet object "statistics box"?

[marcus_sommer]

Take a look on the QVFieldObserver.qvw from rbecher: Re: Re: Chart with count of $Field values‌.

- Marcus