Change a dropdown field to have a none option

[Chaz_]

Hi,

We have created a dropdown field with no none options. It now turns out that for reporting and auditing purposes, users need to be able to filter where the field has not been populated. The drop down simply has a Yes and No options.

Unfortunately, when reporting when adding a filter for drop down value is Not Yes and Not No, it doesn't produce the expected results.

How easy is it to retrospectively change the field so that it has a None option? I tried to amend the dictionary, but it doesn't apply the update.

Thanks.

[Chaz_]

Thanks all. This is now working!