Service HOMEASSISTANT.UPDATE_ENTITY for an attribute?

Is it possible to call a service to update an attribute of an entity ?

I have a cover. Only when open or closed, or stopped, I get the value of the attribute (current position), I want to see the position every second or so…

The service asks the integration to do an update of an entity.
Depending on the integration, that might update the attributes or not, no fixed rule, here.

Bottom-line: state which cover integration you’re talking about

I have 2 Velux screens and 2 Velux Windows.