Dynamo : 'Object reference is not set to an Instance of an Object' 'EvaluateEnvironmentalProductDeclaration' 'Life Cycle Assessment Phase'

[MarkAckerley]

Hi,

I'm working in Dynamo 2.3 and my EvaluateEnvironmentalProductDeclaration node has a 'Phase' input which I haven't seen elsewhere.

I have had a try at guessing how it should be inputted (I am happy with a placeholder value just to get this working) but I have had no success.

My warning states 'Specified cast is not valid' so clearly creating a Type of 'life cycle assessment phase' was wrong.

Unfortunately I have only basic knowledge of BHoM and do not understand how I should 'document phases of life within EPDs' to make this work.

Any advice would be appreciated.

Kind regards,

Mark

[MarkAckerley]

So seemingly, I need the Dynamo equivalent of 'Merge'

It does not appear to be in 'Query' or 'Modify' or anything in oM... The Dynamo 'List.Create' doesn't help either.

Any assistance would be appreciated.

Kind regards,

Mark

[FraserGreenroyd]

Hi @MarkAckerley

The merge component is a Grasshopper native component. so won't exist within any BHoM nodes unfortunately.

@kayleighhoude @michaelhoehn @pawelbaran do any of you know of a similar component for Dynamo specifically?

[MarkAckerley]

Hi Fraser, thanks for the reply...

List.Create is probably it's equivalent, so the problem is likey to be the 'CreateType' 'LifeCycleAssessmentPhase' node.

So close!

Cheers,

Mark

EDIT : Aha! It is an enum... A different warning, but progress!

EDIT2: This looks pretty similar to the example...

[MarkAckerley]

If anyone had any thoughts on why the 'Object reference is not set to an Instance of an Object', I would be very grateful.

See attached files, Revit 2020, Dynamo 2.3.

Kind regards,

Mark

BHoM-01.zip