Problem with Rebar


First I have to start by saying that I am new to Dynamo.

I am trying to create a simple rebar in a slab. I have been trying to find simple tutorials but all I can find are quite complicated ones.

Please see the attached images. Can someone please explain the warning, and if possible a solution to this?

Also, if you know of any basic tutorials for rebar in dynamo it would be much appreciated.

Here is what it looks like in Revit:

Hi @e.laverton,
I will definitely recommend this class to learn Rebar related things with dynamo. All you have to do is just re create his graph from start to end. All the data-set can be download from that website and you can open that in another dynamo session to recreate the graph.You will definitely understand the workflow if you do like that. it is simple.
For your problem I assume that you are using Revit 2019 and Dynamo for rebar version 2. If so for the time being I would recommend to use Revit 2018.3 instead of Revit 2019 and Dynamo for rebar version 1.3 with dynamo version 1.3. The dynamo for rebar package version 2 is not properly updated for Revit 2019 still yet. That is why you are getting that warning.

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