Does someone help me with the fixation of arms? Plzzzz

I downloaded the new sims 4 studio update and went to the Modding part. Once there, I give Fix slot rays (cas arm position) but nothing happens. I do not believe any file fixed in the folder of Sims 4 studio. I only have one clothing file to try with that first. And enter the game to see if it worked after giving it and nothing. I downloaded the executable version, the installation version, not the other. Can you tell me how to fix it please? I do not know what to do anymore ...