How run dynamo so that it will fill in all all "MARK" fields on revit project?

[danezeq]

Sorry for the baisic question. it’s actually my first trial with dynamo ever.

The purpose is to fill it with numbering on chronological order. 1,2,3,4…

[Peter_Jenkins]

Each stage is explained in the image below.

Add in a node and run dynamo, follow what is happening node by node.

[danezeq]

actually someone has just sent me a dynamo file that did the trick! i’m attaching here.

[rartis]

That works great! Thanks!