Adding shared parameters to a family - cont

Revit
,
1

Hi just a continuation from this post -

I was wanting to know if I could get some help with the below solution to the post above-

Wanting to know why I am getting the below warning :

Script Error - Export

It runs and loads for a time and then the warning pops up.

I have checked the families and the parameter has not gone across.

Thanks for any help anyone can provide.

Cheers