Transferring Data from old Model to Updated Model using Element ID

Revit
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Hi,

I created parameters called Cable Tag and Element ID in an old model. But this model got updated and further elements have been added to the new one. I exported the two data and want to push/transfer these old info into the new model. I watched a video from Aussie BIM Guru ( Retrieve Revit elements by Id using Dynamo! - YouTube) that is related to this topic but I can’t seem to solve the warning when it comes to String to Number. I am new to Dynamo btw :slight_smile: Can someone explain to me on how to solve this? thanks!

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Look through the Id list - there will be one in there somewhere which likely cannot convert cleanly to a number. It might be a null (empty) cell in Excel, in which event you should filter your two lists of data using an IsNull node and a FilterByBooleanMask.

Glad the video has been helpful to a point (I’m the Aussie BIM Guru as well :slight_smile: ).

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