I want to create a SCR shut down circuit, but it is not running "error: does not have a probe" I googled it but I couldn't find the answer or atleast I didn't understand it since English is not my native language.... can someone help me out with this circuit: https://easyeda.com/editor#id=d313a443978d464e89c5b76833dee979 I want to see what the current through the resistor in the end is, therefore I want to trigger the first SCR lets say after 5 ms and then to shut it down trigger the second SCR which is above it after 10 ms, then I want to see if the second SCR will be shut down because the negative source of the capacitor shuts it down and what voltage I will have, because my task is to create a circuit at which the capacitor voltage will not become negative