[TYPO3] Empty value when eval int

[Christopher Schnell]

Hi,

is it possible, to have an empty value in the backend, when the eval 
value for a field is set to int? I have the following scenario:

A number of records is displayed in the frontend and I want them 
paginated. So I set a standard value like 10 in constand editor. Now 
someone wanted to change the value for a single page to 5 and changes 
the value in the plugin settings (Flexform).
Later he thinks, that  10 records are best and tries to delete the value 
of 5 from the field, but the field always sets the value to 0.
0 however means that no pagination at all takes place, so he has to set 
the standard value in the plugin settings, which is stupid.

Is there a way th evaluate int plus empty value?

Regards,
Christopher.