image in reports

[Benni]

Hello everyone
I have a problem with the reports, especially with the images.
In the database the images are classified with the IMAGE type. Appsheet has put them in the sheet and inserted them as url.
The image represents a stylized shape of the fuel level of a vehicle. You will find different ones depending on the condition to be represented.
In the generated report various information is correctly reported and I would like to show the image of the corresponding fuel level. Instead I see the link, the correct one, to be clear, but to see only the image, what should I do?

Thanks for the answers 

[JSO]

Probably because you insert the url type column.
Try to create a virtual image type column with the formula being the url field and use this new column in the document

[Benni]

ciao @JSO  thanks for your reply

I don't understand my mistake. I'm following your advice. I created a virtual column and I'm using that value in the report.
If I set the data type to IMAGE, I get a url again. If I use the REF type, I get the ID of the image I need, the correct one, but not the image.
I'll try to post some images to help understand better.

[JSO]

Example:

[Benni]

ciao @JSO 

thanks for the reply, so I applied, I hope well, your suggestion.

unfortunately I get a blank space, nothing else. Where am I going wrong?

[JSO]

Try putting a specific image in the FORMULA for "livello carburante" (any URL you find on the internet and the file ends with .jpg).
If that works, the problem is in the formula assignment.
Now you have it defined as the content of a field [livello carburante] which is of type REF, and that is not an image. As AppSheet tries to control errors, what it does is return a blank image.