Fixing inverted damma in alqalam

I found problem when typeset inverted damma in alqalam. To fix this I have to traverse across the module, because I could not find adequate  documentation about the structure, much worse I have never programmed any latex stuff.
In brief the flow is the following:
1. UTF code is processed in qutfcode.sty. Inverted damma UTF code is d997 (don't get confused with reversed damma). It was not encoded on alqalam version 427/08/17 0.2. Thus I add the encoding "\n@xp\a@u.
Note: some important arabic UTF code can be observed on utf8-chartable.de
2. The "\n@xp\a@u code then will be translated into integer in qaparse.sty. It is encoded as \c@ammad, with integer code 12.
3. Then in qaboxes.sty on function \put@voc case 12, the inverted damma character is translated as \a@ammad to be written.
4. Finally the code is mapped into the font glyph at qxarbsymb.sty.
\chardef \a@ammad = '146.

This is a simple code to view the glyph:

\documentclass{article}
\usepackage{fonttable}
\pagestyle{empty}
\begin{document}
\fonttable{qnskh14} %this is default font in alqalam
\end{document}