Addendum:

I've found out some more that may clarify the problem to one of you (but
obfuscates me even more <g>)...

What I've done is to pass my "root" object to the script package's
constructor. I've added a simple public member to the root class. And
now I am able to access this member within the script. Well, I'm not
sure if this is understandable... Umh... <g>

Here is the JScript that makes the "scripting engine" assembly:

package JScript {
 class MicroJSE {
   private var Application;
   public function Eval(expr : String) : String {
     return this.Application.Version;
     //return eval("this.Application.Version", "unsafe");
     //return eval(expr);
   }
   public function MicroJSE(zApp) {
     this.Application = zApp;
   }
 }
}

The class the zApp object is instanciated from is (in short):

namespace foo {
 public class cApp {
   public string Version = "alpha";
 }
}

[pardon, wrong button...]

Addendum:

I've found out some more that may clarify the problem to one of you (but
obfuscates me even more <g>)...

What I've done is to pass my "root" object to the script package's
constructor. I've added a simple public member to the root class. And
now I am able to access this member within the script. Well, I'm not
sure if this is understandable... Umh... <g>

Here is the JScript that makes the "scripting engine" assembly:

package JScript {
 class MicroJSE {
   private var Application;
   public function Eval(expr : String) : String {
     return this.Application.Version;                     //[1]
     //return eval("this.Application.Version", "unsafe"); //[2]
     //return eval(expr);                                 //[3]
   }
   public function MicroJSE(zApp) {
     this.Application = zApp;
   }
 }
}

The class the zApp object is instanciated from is (in short):

namespace foo {
 public class cApp {
   public string Version = "alpha";
 }
}

Now I do:

using JScript;
using Microsoft.JScript;
(some more usings)
(some code)
protected cApp pApp;
(some code)
(assignment of the app object to the pApp pointer)
JScript.MicroJSE E = new JScript.MicroJSE(pApp);
string sResult;
try {
 sResult = E.Eval("this.Application.Version");
}
catch(Microsoft.JScript.JScriptException jse) {
 sResult = jse.Message;
}

The "real" version I've marked with [3] in the above snipplet. It
behaves like the debugging version [2], i.e.: sResult contains a message
from the cought exception that states: "object required". The thing is
now, that, if I'm running the version [1], everything goes fine!?!?!

So, the Application object is indeed passed to the JScript engine
assembly, and it is accessible -- but the eval() can't access it!? Can
anyone explain this behavior, or tell me where my thinking takes the
wrong curve?

Thanks in advance...

Carsten