Search and replace doesn't work in visualation object?

2020-02-27T18:06:35.090000Z

I've duplicated a group of graphic objects, and need to make the same change to all variables in the duplicated objects -
i.e., change Array[1] to Array[2]
Then duplicate again, and search/replace Array[1] to Array[3], and so on.

When I select 'Selection Only' and click 'Replace All' it tells me, 'Search scope 'selection only' is not supported for this editor'.

So I then select 'Active Editor' and 'Find Next' then 'Replace', I get the error msg: 'Value cannot be Null. Parameter name: stBlock'

So what is the proper way to do this? Am I missing something?

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Search and replace doesn't work in visualation object?