biblatex-sbl special page numbers

Question

I am using biblatex-sbl and I have this question:

There is a volume that is separated in a comment (in Roman numerals), together with a text edition and a translation (both in Arabic numerals and both starting with "1") - how can I specify my page number? For instance, I want to have this style:

Vööbus, Arthur: History of asceticism in the Syrian orient. A contribution to the history of culture in the Near East. 3 vols. CSCO 184.197.500, Subsidia 14.17.81, Louvain 1988, 1 [syr. Text]; 4 [transl].

\documentclass{article}
\usepackage{filecontents} 
\begin{filecontents}{\jobname.bib}
@mvbook{Voobus.1988,
  author     = {Vööbus, Arthur},
  title      = {History of Asceticism in the {Syrian Orient}},
  subtitle   = {A Contribution to the History of Culture in the {Near East}},
  shorttitle = {History of Asceticism},
  volumes    = {3},
  note       = {\citeseries{CSCO} 184.197.500\ifbibliography{\addsemicolon}{\addcomma} Subsidia 14.17.81},
  location   = {Louvain},
  publisher  = {Secrétariat du Corpus SCO},
  date       = {1958/1988},
}
@series{CSCO,
  series      = {Corpus Scriptorum Christianorum Orientalium},
  shortseries = {CSCO},
  options     = {skipbib},
}
\end{filecontents}
\usepackage[colorlinks]{hyperref}
\usepackage[style=sbl,ibidtracker=false,idemtracker=false]{biblatex}
\addbibresource{\jobname.bib}
\begin{document}
\null\vfill
Filler text\footnote{\cite[1 [syr. Text]; 4 [transl]]{Voobus.1988}.}
Filler text\autocite[1 [syr. Text]; 4 [transl]]{Voobus.1988}.
\printbiblist{abbreviations}
\printbibliography
\end{document}

Answer 1

If I understand you rightly, you just need to wrap your square brackets in braces:

Filler text\footnote{\cite[1 {[syr.~Text]}; 4 {[transl]}]{Voobus.1988}.}
Filler text\autocite[1 {[syr.~Text]}; 4 {[transl]}]{Voobus.1988}.