C++/CX - manually throwing exceptions and return the throw-Message to a String^

Question

hello,

i am trying to manually throw exceptions and want to use the message of the exception for a textblock.

The excp-string (String^) is filled but not with the text i used for throwing the exception. Am I throwing the exception the wrong way? thanks!

		try {
			throw "test-throw";
		}
		 catch (Exception^ ex)
		   {
			// excp is a String^ used to set the Text of a textblock
			   excp = ex->Message;
		 }