Hi you can add a new parameter or add it at component name

@warlockzul, From your post it seems that your question is about simulation. If so you need to do two things: Change the **Category** of this post to **Simulation**; Read the Simulation Tutorial (3) in (2) in: [https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a](https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a) so that you understand **Parameters** and how to use them.

@warlockzul, The Spice Tutorial also explains **Expressions** which you need to understand so that you can use **Parameters **effectively.

@warlockzul, You may find it easier to do tolerancing analysis using LTspiceXVII directly in a local installation (mainly because the .step and plotting functions in native LTspice are better than in EasyEDA). [https://www.analog.com/en/design-center/design-tools-and-calculators/ltspice-simulator.html](https://www.analog.com/en/design-center/design-tools-and-calculators/ltspice-simulator.html)<br> <br> These references explain tolerancing, Worst Case and Monte Carlo analyses using LTspice very weill: [https://k6jca.blogspot.com/2012/07/monte-carlo-and-worst-case-circuit.html](https://k6jca.blogspot.com/2012/07/monte-carlo-and-worst-case-circuit.html) [https://www.analog.com/en/technical-articles/ltspice-worst-case-circuit-analysis-with-minimal-simulations-runs.html](https://www.analog.com/en/technical-articles/ltspice-worst-case-circuit-analysis-with-minimal-simulations-runs.html) [https://www.allaboutcircuits.com/technical-articles/performing-worst-case-circuit-analysis-with-ltspice/](https://www.allaboutcircuits.com/technical-articles/performing-worst-case-circuit-analysis-with-ltspice/)

@ [andyfierman](https://easyeda.com/andyfierman), @ [UserSupport](https://easyeda.com/usersupport), thank you very much for your feedback! I will do as you suggested.