Combobox Image field is disabled

[Colchester]

I am trying to make a people picker with Combo Box. My data source is SharePoint but the list doesn't have Person field.

Therefore, in the Combo box Item property I added:
Filter(Office365Users.SearchUser({searchTerm: ComboBoxBook.SearchText, top:999}), !IsBlank(Mail))

The Combo box can success search for users in my tenant. However the "Image" field is disabled as the screenshot below:

Is it possible to show the user's image in the combo box?

[NandiniBhagya20]

Hi @Colchester ,
If you are using sharepoint as a datasource, add a hidden person column in your list and then you can put Choices(SPListName.PersonColumnName) in Items property of combobox control
This will enable Picture field

[Colchester]

I tried not to add an empty column. 

Is the Combo image field only available to SharePoint list person column?

[NandiniBhagya20 · Accepted solution]

Yes it's only available when you link it to SharePoint column. 

You can use a text field and a gallery control (with image, 2 labels to display name and email id) that will show results based of input added in text field.