Conditional statement Issue

[MoreDhaval]

Explain the problem.
Include the exact command line you used and all inputs necessary to reproduce the issue. Please create as minimal an example as possible, to help the maintainers isolate the problem. Explain the output you received and how it differs from what you expected.

Pandoc version?
What version of pandoc are you using, on what OS?

[MoreDhaval]

Conditional statement not working
\usepackage{ifthen}
\begin{document}

Solution 1
$if("value"==0)$
Inside diameter conservator Dhaval
$endif$

Solution 1
$if("value"=0)$
Inside diameter conservator Dhaval
$endif$

\end{document}

[tarleb]

This is a duplicate of #3697; closing in favor of that issue.

[MoreDhaval]

\documentclass[a4paper,fleqn,8pt]{scrartcl}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[english]{babel}
\usepackage{geometry}
\geometry{a4paper}
\geometry{right=1cm}
\geometry{bottom=1cm}
\geometry{top=0.5cm}
\geometry{headsep=0.1cm}
\setlength{\headheight}{90pt}
\setlength{\textheight}{22.8cm}
%%% PACKAGES
\usepackage{tikz}
\usepackage{graphicx}
\usepackage{zref-totpages}
\usepackage{amsmath}
\usepackage{ifthen}
\usepackage{exscale}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{calc}
\usepackage{fp}
\usepackage[%per=slash,
decimalsymbol=comma,
exponent-product = \cdot,
loctolang=DE:ngerman,
per-mode=fraction,
open-bracket=(-]{siunitx}
\usepackage{array}
\renewcommand{\sfdefault}{lmr}
\renewcommand{\familydefault}{\sfdefault}
\setcounter{secnumdepth}{4}
\setcounter{section}{1}
\parindent0pt
\usepackage{tabularx}
\newcolumntype{L}[1]{>{\raggedright\arraybackslash}p{#1}}
\newcolumntype{C}[1]{>{\centering\arraybackslash}p{#1}}
\newcolumntype{R}[1]{>{\raggedleft\arraybackslash}p{#1}}
%%% HEADERS & FOOTERS
\usepackage{fancyhdr}
\fancyhead{}
\fancyfoot{}
\pagestyle{fancy}
\renewcommand{\headrulewidth}{0pt}
%Seitenkopf
\lhead{\begin{tabular}{C{3cm}!{\vrule width 2pt}C{9,3cm}!{\vrule width 2pt}C{3.5cm}}
\includegraphics[height=1\baselineskip]{../images/logo}& W.D.No: \varEWERKNUMMER \ Project: \varEPROJNUMMER & \large \textbf{Test} \
\large IBN & \large \textbf{\nouppercase{\leftmark}} & \large \thepage \slash \ztotpages \
& \large\centering \nouppercase{\rightmark} & \
\noalign{\hrule height 2pt}
\end{tabular}
}
\chead{}
\rhead{}

%Seitenfuss
\lfoot{
\begin{footnotesize}
\begin{tabular}{L{8.1cm}R{8.2cm}}
\noalign{\hrule height 2pt}
Origin: & \varPROGVERSION \
\hline
\end{tabular}\
\begin{tabular}{p{16.3cm}}
{Information.
.} \
\end{tabular}\
\begin{tabular*}{17.1cm}{ l|l|l|l|l|@{\extracolsep{\fill}}l|l|l|l }
\hline
Prepared by: &Designer: &First release: &Last edit: &Authorization: IND& & & & \
\varGRUPPE & \varBEARBEITER& \today & \date{\today} & \multicolumn{5}{l}{} \
\end{tabular*}
\end{footnotesize}
}
\cfoot{}
\rfoot{}
\author{}
\title{}
\begin{document}\newcommand{\varPROGVERSION}{1.3.7.0}
\section*{Print Data}\newcommand{\power}[2]{\left(#1\right)^{#2}}
\let\Power=\power

\let\csqrt=\sqrt
\renewcommand{\sqrt}[2]{
\ifthenelse{\equal{#2}{2}}%\isodd{#2}}
{
\csqrt{#1}%\fi b
}{\csqrt[#2]{#1}}}

\newcommand{\siToVar}[2]{
\let\oSI=\SI
\renewcommand{\SI}[2]{##1}
\FPset#2{#1}
\let\SI=\oSI
}

\newcommand{\siVar}[1]{
\let\oSI=\SI
\renewcommand{\SI}[2]{##1}
#1
\let\SI=\oSI
}
\setcounter{section}{0}

\begin{footnotesize}

\begin{tabular}
{ | l | l | l | } \hline
\textbf{Input values} & & \

\setcounter{\varCALC}{1}

$if(\varCALC==0)$
Inside diameter conservator Dhaval
Predefined length of conservator
Predefined volume of conservator
$endif$

$if(\varCALC=1)$
Inside diameter conservator
$endif$

$if(\varCALC=2)$
Predefined length of conservator

$if(\varCALC=3)$
Inside diameter conservator
Predefined volume of conservator
$endif$

$if(\varCALC=5)$
Inside diameter conservator
Length of main compartment
$endif$

\begin{cases}
$if(\varCALC=0)$
Sandeep
else
Sandeep negi
$endif$
\end{cases}

\begin{cases}
\If{\varCALC=0}{
something if ;
}
\Else{
something else ;
}
\end{cases}

\usepackage{ifthen}
\begin{document}

If \varCALC=0 then the next sentence will be "Num is large." else "Num is small."

Num is \ifnum \value{num}>100 {large} \else {small}.

\end{document}

\end{tabular}
\end{footnotesize}

\subsection{}

\end{document}

[MoreDhaval]

Pandoc version 2.18