you are a genius.Thank you very much

Thank you for those detailed NX Motion videos. I have a question for you and only you can answer this: I have a mechanism with few joints lets say and I want to minimize the load at the joint 3. So, I want to iteratively move the X position position of the joint from 50 to 150 mm 1mm by 1mm and compute the simulation again and again and find the least resultant force among them. How can I do that? I can not record the results as an expression so I cannot use the "goal seek" function of the excel of NX. Thank you!