In patents, how to express the functional features in independent claims?

If you want to express your application with functional features, you must meet at least two conditions: first, the specification must record more than two specific embodiments that can realize this function.

Secondly, all the specific embodiments covered by this functional feature can be supported by the specification, and no one has applied for any of them before.

See if you meet the above two conditions. If not, please modify it according to the examiner's opinion.