https://forums.autodesk.com/t5/fusion-support-forum/what-is-the-difference-between-these-dimensions/m-p/11885308#M38467 <P>those are "driven" dimensions (indicated by the parens).&nbsp; The value shows the measurement of the object at the current size.&nbsp; The one you can edit is a "driving" dimension.&nbsp; You can right click on the driven dimension and choose "toggle driving", but, my guess is that this will fail because the system would be over-constrained (which is likely why the driven dimension was created in the first place).&nbsp; But, it is worth trying at least.</P> Mon, 10 Apr 2023 14:59:30 GMT jeff_strater 2023-04-10T14:59:30Z https://forums.autodesk.com/t5/fusion-support-forum/what-is-the-difference-between-these-dimensions/m-p/11885297#M38466 <P>I have three dimensions on an object, these are for different diameters of an object.</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Screenshot 2023-04-10 at 15.54.00.png" style="width: 600px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1200487iAC91057966B9CD8E/image-size/medium?v=v2&amp;px=400" role="button" title="Screenshot 2023-04-10 at 15.54.00.png" alt="Screenshot 2023-04-10 at 15.54.00.png" /></span></P><P>The bottom diameter is editable, the top two are not, can I change the top two so I can edit them as I need to change these?</P> Mon, 10 Apr 2023 14:56:15 GMT https://forums.autodesk.com/t5/fusion-support-forum/what-is-the-difference-between-these-dimensions/m-p/11885297#M38466 SimonPlatten 2023-04-10T14:56:15Z https://forums.autodesk.com/t5/fusion-support-forum/what-is-the-difference-between-these-dimensions/m-p/11885308#M38467 <P>those are "driven" dimensions (indicated by the parens).&nbsp; The value shows the measurement of the object at the current size.&nbsp; The one you can edit is a "driving" dimension.&nbsp; You can right click on the driven dimension and choose "toggle driving", but, my guess is that this will fail because the system would be over-constrained (which is likely why the driven dimension was created in the first place).&nbsp; But, it is worth trying at least.</P> Mon, 10 Apr 2023 14:59:30 GMT https://forums.autodesk.com/t5/fusion-support-forum/what-is-the-difference-between-these-dimensions/m-p/11885308#M38467 jeff_strater 2023-04-10T14:59:30Z