length( $HashOfTNBs{$rec_co­unt}{$subindex} = $1 )
        or  throw TNBCriticalColExcept­ion(
            "Cannot add multiple key entry in hash array" );

##</code><code>##

    if(  "" eq ( $HashOfTNBs{$rec_co­unt}{$subindex} = $1 )  ) {
        throw TNBCriticalColExcept­ion(
            "Cannot add multiple key entry in hash array" );
    }