Insert cross-reference without punctuation

I am creating a template for use in writing academic papers. The template makes use of numbered paragraphs for examples, like:

(34) This is an example.

If I insert a cross-reference to (34) it will include the parentheses just as this sentence demonstrates, no matter what option I choose in the cross-reference window. The problem is sometimes I need to refer to sub-examples like (34a), but LO insists on displaying them as (34)a, which is dumb. I figure if I could just insert a reference to the number, without the parentheses, then I could manually add the letter ‘a’ (or maybe insert that as a xref too?) And then manually add the parentheses as well.

Attach a sample file to your question. This will be easier than recreating an example.

You can’t, cross-references drag all the separators configured in the list (or outline numbering) with them. See for example this bug report:

Bug 121465 - Impossible to insert a cross reference to paragraph without the content of fields Before and After of the Customize tab of the list style, if field Before is used

Disappointing. But thanks for the info.