Making 'Secondary' Dimensions Parametric
The DIAM5.5 dimension is the 'driving' parametric dimension but I was wondering whether the depth could also be made associative (currently it is just typed in the properties>display box)?

The DIAM5.5 dimension is the 'driving' parametric dimension but I was wondering whether the depth could also be made associative (currently it is just typed in the properties>display box)?

Your question is kind of vague, presumably you intended to include something to show what you're talking about. Let's assume you are trying to add a dimension for a circular cut with a depth. You want to have a single dimension that includes the depth, not two separate dimensions.
What you do is you find out what the name of the depth dimension is, let's say it happens to be "d3". You can find this name by "editing" your feature and hovering over the depth dimension.
Once you have this name, in your drawing (or by editing the diameter dimension itself if you're "showing" it in the drawing) you edit the text and to the default "@D" you add " X &d3 DP" or whatever syntax you need to use. Now the depth is called out in the diameter dimension, and if you change the depth it is updated here, too. Definitely takes a bit of the clutter out of drawings.
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