I am trying to put dynamic site address in DataSource of "Create Generative Answers" node using a variable - varSite (type string) by Power FX formula: Text(Topic.varSite). But when I save it raise below error:
When I try to select variable as below(unsaved), and save it, the variable disappear after topic get saved:
Can anyone please tell me if I am doing it correctly? or suggest other way round.
Thanks!

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