Need to find block shaped in matlab

I am reproducing a scientific paper, but I can't find any block that looks like the one below. Can anyone tell me what this block is called and how it is used. It looks like a multimeter but when I looked it wasn't?

Answer 1

[Vasco Lenzi]

Hi, this is called the "probe" block from Simscape libraries (not to be mixed with Probe from Simulink libraries). You can use it to pick a variable from other blocks and outputting from this block at any desired locaiton in the simulink canvas. You need to be working with at least release R2020a.

we do have as well block called "multimeter" but is used with a different technology.

hope this helps

Vasco

[THANH DAT]

Thank you, I found that block, but when I connect that block to the Mosfet, this message appears "unable to find elements to connect in selection". I've tried many ways but still can't find a way to connect to it.