Is it possible to have additional attributes on input elements?

Hi, I’m new to cockpit and I’m using the free version. I have a question about attributes in text fields. Apparently there are some options like maxlength, minlength and placeholder in the field options. Any other attribute I add is added to the CONTAINER of the input, not the input element. Ok, but my question is: is it possible to add custom attributes to the input element? I want, for example, to use the “pattern” attribute on the text field, but as I said before, this attribute is being added to the container. Can anyone instruct a beginner? :sweat_smile: