Hi,
you try to compare "Tipo registrazione" with "Tipo registrazione", you need to set in "Campo da confrontare" parameter to "Valore Personalizzato" (see tip screenshot).

Is there some documentation about the component?

Yes but is poor because Easy Profile is a young component, in future we will integrate our docs. To help our customer we use same UI of Joomla article and we have added tips on many parameter.

i have already done it. But it doesn't work.

The field i recall is set up as in image attacched.

Go to birranostrale.com and try the tab profilo

On your site I see this, see screenshot.

You field "Tipo Registratione" is always equal to "Tipo Registrazione". So conditions are always all met.

Easy Profile allow you to compare current field value with another field value, in your case you need to compare your field value with "Custom Value"

but i must configure the field "tipo di registrazione" or the single field? i need that if somebody chooses "beershop" easyprofile must shows the field "partita iva" and "nome azienda" but it doesn't do that.

I can't understand why

thanks