How to insert a tabular array to LyX

[ehud.behar at protonmail.com]

I want to insert a tblr environment (from the tabularray package) into my lyx document.

I read that currently LyX supports only tabular environments for tables, and not even tabularx.

But still I would like to get some thoughts or ideas from the members how to insert (graphically, not through ERT) something like the following environment:

>\begin{tblr}[t]{width=10cm,colspec={X[c]},rows={ht=2cm},hlines,vlines}
>item 1
>\\
>item 2
>\\
>item 3
>\end{tblr}

Thanks very much.
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