For some reason I just could not get the attributes to cooperate and then I just opened it and started again and everything started falling into place. Thank you for the info on the visibility of the attributes. Otherwise using the icons under the Visibility tab should be faster. Note that you can right-click on the attribute > object visibility > hide for all states/show for all states to speed it up a bit. You don't need a double look up, you can change the visibility state of the attributes per visibility instance using the icons in the Visibility tab of the Block Editor (refer to image attached): Then, if I understand your issue regarding the attributes correctly: I would like to know what that 'Tool Palette-Old Castle' thing is? You also seem to have a bunch of extra icons in your Panel. Perhaps you could do a screencast on how to go about deciding which constraints are necessary to apply, and how to go about applying them without over-constraining the drawing? I tend to always over-constrain, not having a broader concept of what I'm actually doing. I've had trouble wrapping my head around constraints, and can't seem to find any decent tutorials on them - so I look forward to analysing your constraints and implementing them into my own blocks, as a method to compare with using parameter sets. Hi highly impressed by how you've been able to use your constraints dynamically. If you have any problems with the blocks (Still working out some kinks) just use the 'Reset block' feature. I think the lookup table might work best because it will be easier to add new pipe sizes in the future.

It is nothing fancy but it might be interesting that one uses the visibility while the other uses a lookup table. I have also put inside of this drawings two companion dynamic blocks (I hope to incorporate them into my C-inlet dynamic block) they are simple tools that I use they basically includes all of the pipe sizes that we typically use in my field. ((I will post a screencast on how I use this in the morning))

This block has the plan view & two side views all in one. You stack risers on top of bases and inlets with grate seats on top of risers. This block is created so that you can stack them to create storm inlets at specific elevations. I am presently using annotative dimensions and I don't like how they scale in paperspace so I might use your double lookup and make that work with visibility but I am not sure yet. I have more work to do with making this block bullet-proof for the production environment. I have attached a drawing that includes a dynamic block along with a word document that explains how I created the block. It gave me more ideas, can't wait to try that double lookup with the bracketed information etc. Thank you for the Webinar posted earlier today.

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