Question: How to obtain the voltage of a circuit ?



I use maplesim to simulate a very simple circuit, and want to obtain voltage of a resistor, so I check the voltage of  Probe block, but get nothing. I upload my document.

I'm a beginner in maplesim, can you give me some advices?

Best regards.

By the way, the Probe block has only one terminator, I am very puzzling about it. I search it in help document, but too few information exist. Can you give me some information about this block? Such as its function, and how to use it correctly and effectively.

And if I want to detect the voltage as the picture illustrated, where should I add the probe block?

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