Passing DataTypes(uint8) from MatLab to C#

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C#

MatLab

hey guys i wanna get unit8 variable from matlab with c# . For this purpose, i write below code but doesn't work. how can i do this?

var activationContext = Type.GetTypeFromProgID("matlab.application.single");
var matlab = (MLApp.MLApp)Activator.CreateInstance(activationContext);
byte b = new byte();
string a = "RGB = imread('c:\02.jpg');" +


" I=double(RGB);" +
" W=size(I,2);" +
" H=size(I,1);" +

" cform = makecform('srgb2lab');" +
" lab = applycform(RGB,cform);" +
" b=lab(:,:,2);" +

" [SkinIndexRow,SkinIndexCol] =find(127<b);" +

" SN=zeros(H,W);" +
" for ind=1:length(SkinIndexRow)" +
"    i= SkinIndexRow(ind);" +
"  j= SkinIndexCol(ind);" +
"  SN(i,j)=1;" +
"end " +

"L = bwlabel(SN,8); " +
"BB  = regionprops(L, 'BoundingBox'); " +
"bboxes= cat(1, BB.BoundingBox); " +
"lenRegions=size(bboxes,1); " +

"rgb=label2rgb(L); ";
object f = matlab.GetVariable(a, "rgb");