How can i make a co-simulation using OPNET and MATLAB using ESD file?

I made an SD file that contain the information bellow

and when i run the program it appear this error

I need to know all the step to make this co-simulation, note:I am using windows 7 64 bit in my work.

Thanks all for any help

[Rasheed]

Dear Rana, Did you find a solution for your problem?

Answer 1

[rana]

any one help me about the co-simulation, i need to know how can i use the External system definition(ESD)

Answer 2

[Chacko]

I too have the same error while simulating. I tried with MATLAB, both 32 bit and 64 bit versions. Still the same error unable to find entry point esa_main(). Any help is appreciated. Hello Rana, do share your ideas if you get any. Thanks