Invoke (Magic xpa 4.x)
The Invoke operation is used to access third generation language programs, external applications, Web Services, and COM objects as described below:
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COM Object – Handles a COM object defined in a task. 
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OS Command – Executes applications outside the scope of Magic xpa, such as accessing a spreadsheet or a word processor. 
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User Procedure (UDP) – Returns values from third generation language programs. 
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Web Service Lite – Lets you call a Web Service directly (same functionality as eDeveloper V9.4). Since version: 1.8 SP1 
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.NET – Handles a .NET object defined in a task. 
You can access the Invoke Properties by pressing Alt+Enter.