Migrate history data retrieval functions
- Last UpdatedFeb 03, 2025
- 1 minute read
Workbooks created with earlier versions of the AVEVA Historian Client software may contain calls to the wwHistory and wwWideHistory functions. Instead of manually updating these calls to use the new wwHistory2 and wwWideHistory2 functions, you can automatically update them using the History Values wizard.
To migrate history data retrieval functions:
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Open the workbook containing the function calls you want to migrate.
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Click the cell containing the call to wwHistory or wwWideHistory.
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On the Historian tab, in the Controls group, click Edit Function. The History Values - Step 1 of 4 dialog box appears.
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Select the Upgrade function to newer format check box. Click Next.
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Go through the rest of the wizard as described in Retrieving History Values. After you finish the wizard, the function call is updated to use the new function.