For an excel in a file, there are several settings options:
including the ability to prohibit modifications (blocking of dimensions, functions, or properties)
(generally this is used 99% for library pieces)
In your case, you should rather put allow modifications,
The dimensions in the excel will only update if you re-open the excel after editing.
That's why, if you want to retrieve the values in properties (at the config),
You will have to create a property (at the config) with a "coded" link on the desired dimensions.
(enable the config,
right-click on the annotations folder "Show all dimensions",
then properties file to the config,
create the property by typing its text,
then to integrate the code of a dimension click on the dimensions in the 3D)
A coded property looks like this:
$PROPRIETE@Description
= Connection Ø cote@@config@esquisse@nomfichier" mm
and solved it gives
= Ø18 mm connection
Warning: disadvantage with this method, once a dimension of a config is modified, and is almost impossible to make it go back to the original way,
because opening the Excel updates with the current value.
(on the other hand, you can put in the Excel below, with empty lines, a copy of the configs that you can re-copy-paste in the line of the active config)