Matlab Coder: Error when using some functions

I'm using Matlab coder to convert my Matlab code to C.

I have some error related to below functions, and have some questions.

1. imwrite function cannot be converted. Is there any other function that i can use?
2. I'm using insertShape function as belowed:

insertShape(IMG, 'Rectangle',[AREA_L AREA_U AREA_W AREA_H], 'LineWidth', 5, 'Color', 'red');

The Error is : コード生成では COLOR は数値でなければなりません。

What does it mean? How can I fix it?

Thank you.

[hoang tuan]

For the Matlab coder, we cannot setting the color by name such as red, yellow...

For fix the above error of insertShape(),I changed to:

insertShape(IMG, 'Rectangle',[AREA_L AREA_U AREA_W AREA_H], 'LineWidth', 5, 'Color', [255,0,0]);

The error is cleared and pass the generation process.