Creating a Dynamo script to select individual families an change the parameter in sequential order

[dcastellanosQATWC]

I am learning Dynamo to create a script that will allow the user to change the shared parameter "BE_Riser Sequential Order" on individual families by:
1. determine the starting number (type in)

2. asking if the starting number is to be the input (True) otherwise use a counting system to increase the number by 1 (false)

3. have the user select the family (Select Model Element by Category)

The program will finish with an output to file or globalparameter to give a value of the current number + 1, which will be used as the new input value for the Sequential Order.

I cannot do a select by floor or select by all elements because the devices are placed and we wire them up in a continuous line and we create a riser diagram based on the order of how the wire touches the devices.

Coming from a LISP background I thought I could use an alternative SETQ by exporting and importing the the values. I am finding out that Dynamo does not work like this.

[moturi.magati.george]

Hi @dcastellanosQATWC,

You can try to ask the question on the Dynamo forum which has a lot of experts.
https://forum.dynamobim.com/

[sayu94]

Hello. If you want to make it this several elements - you must to use node "SelectModelElements"