Is possible to reuse CSS auto-completion for values outside curly brackets?

[oceangravity]

Hi guys!

I'm working on a single monaco input for CSS values (hsla(...), 10em, initial, calc(12px +1vh)), but, using the current CSS language for monaco, I get auto-completion of CSS values only inside curly brackets, is there a way to reuse it outside brackets.

Please, let me explain in detail. I have this input built with monaco-editor:

When I start typing on it, for example hs I don't get the completion/suggestion for the CSS expression of hsla(hue, saturation, lightness, alpha), same for ini to initial, or any CSS value/expression. Instead of that, I just get auto-completion for HTML elements, pseudo elements or whatever, but not for CSS values:

The only way to get autocompletion for CSS values/functions it's just when expression is inside a curly braces like this:

So, my question is: is possible to get completion/suggestion for CSS values/expressions/functions outside curly braces or properties names?

Thank you for your humble/kindly answer!