I need to fetch the field/element on the form for my automation code dynamically. There are multiple fields on the form and based on some particular index that is dynamic I want to fetch that element.

Thus how can I pass this column child index dynamically to the helper method to fetch the desired dynamic fields?

Selector list looks like below:

I tried something like this which does not work:

'ul li:nth-child(${index}'

Throw following error:

invalid selector: An invalid or illegal selector was specified