The aim of this project is to write a working Demo for the Matlab Mex modules present in Scilab. The Matlab MEX-Files is an API which is a wrapper on the current API Scilab. This would make it very easy to port existing Matlab Mex toolboxes into Scilab. A module - mexlib module already exists in Scilab which is compatible with the Matlab-Mex API. Currently the mex support for Scilab is good but there is a lack of a concrete demo. Thus, it is necessary to have a working demo for Mex within Scilab.