Do you know, that… ?

The documentation flat, if you want to show the total size of the hole spacing, You can use custom properties.

In sequence.

1. In the model,, which was created in order, Show Feature Dimensions or insert reference dimension.

2. then create customized property with any name and click the appropriate dimensions. All syntax should appear in the window The estimated value.

3. On the drawing sheet, where already inserted views, insert dimensions or download them from the model. In place of, where you want to show created equation, remove text dimensions. Unfortunately, you can not simply replace the value of a property. That's why I connect with a note dimension.

4. interposition note without the leadership and unite with the property model. After approval appears entry 31 * 11 = 310. You can now align to the dimension line (options available to the right-click).

If you change the length of the model in the window, All parameters are upgraded in the drawing and will be current entry.