Call a method of a class of my dll with installshield

Question

Maybe duplicate with

Call a dll function from InstallAware or InstallShield

How can i call a method of a class of my dll at the end of the setup in installshield?

I have wrote something like the following code at the end of the Setup.Rul in my setup project and set the ComVisible of my dll and my class to true but i recieve this error yet :

"DLL function call crashed: ISRT._ DotNetCoCreateObject"

...
 
szDLLCompletePath = SUPPORTDIR ^ "MyDllName.dll";
 
szClassName = "MyDllName.MyClassName";
 
//The error occured at the following line
set Obj = DotNetCoCreateObject( szDLLCompletePath, szClassName, "");
 
If(! IsObject(Obj)) then
    MessageBox("Cannot load", SEVERE);
 
else
    Obj.MyMethodName(Parameters);
endif;

Note: I have added my dll as support file to my setup project.

Please tell me if there is any sample for this.