Error : Subscripting into an mxArray is not supported.

2014 6 12
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更新时间：2014 6 13
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Hi guys, I am trying to convert a .m file (script) in a .mex using Coder. I am fairly new to this.
an excerpt from the code I'm trying to work with :
1>>image = dlmread('course.txt'); % its nothing but a (2745,5) matrix.
2>>image(:,2) = 120.-image(:,2);
somehow at line two it gives this specific error : "Subscripting into an mxArray is not supported."
I think that , somehow mxArray function is not able to perform the matrix operations.
Can anyone try to explain what exactly is going on here and what can be a solution to this. I really appreciate help from you guys.
Thank you very much.

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