\hyperpage Disability Mark Up Solution Incompatible with Multind Package

[han625]

On page 53 of the Manual:

The encap mechanism of Makeindex allows to use one command only (see documentation of
Makeindex). If the user sets such a command, hyperref suppresses its \hyperpage command.
With logical markup this situation can easily be solved:

\usepackage{makeidx}
\makeindex
\usepackage[hyperindex]{hyperref}
\newcommand*{\main}[1]{\textbf{\hyperpage{#1}}}
...
\index{Some example|main}

I am using LawTeX package written by Christopher DeCoro available at https://sourceforge.net/projects/lawtex/

The bluebook.sty file within LawTeX uses multind package and has the following code at lines 865-872:

\begingroup%
	\def\pin##1##2{}%
	\IfSubStr{#3}{*}{}{%	
		\ifempty{\IndexType{#1}}{}{%
			\index{\IndexType{#1}}{\@bbIndexCite{#1}{#2}}%
		}%
	}%
	\endgroup%

that generates the compiling file and error message upon hyperindex=true:

\begin{theindex}

  \item Title 42, United States Code \hfill\hfill \par\penalty1000\subitem \S 12117~\leaders\hbox to 0.125in{\hfil.\hfil} \hskip2in plus 1.fill minus 1in\pagenumber{\hyperpage{1}}
    \subitem \S 12203~\leaders\hbox to 0.125in{\hfil.\hfil} \hskip2in plus 1.fill minus 1in\pagenumber{\hyperpage{1}}
\end{theindex}

[1</usr/local/texlive/2020/texmf-var/fonts/map/pdftex/ updmap/pdftex. map}] (./Case.ind) (. /Statute. ind I . /Statute.ind:3: Undefined control sequence. | \GenericError #4 \errhelp @err@ . |1.3 ... 1. fill minus 1in\pagenumber {\ hyperpage{1}}

I have tried to swap multind and makeidx indexing packages without success. Please help!