Hi JohanGR,
Syntax of filter would be filter (Datasource, filter condition). It should be comma it won't be the semicolon. For better understanding I have provided few examples in below.
For example, to filter records in a SharePoint list where the 'Status' column equals "Completed", you would use:
This would return all records from the SharePointList where the 'Status' column equals "Completed".
For example, if you have a collection named "MyCollection" and you want to filter it to only include items where the "Status" field is "Completed", the syntax would be:
This would return a subset of items from "MyCollection" where the "Status" field is equal to "Completed".
If you are still facing any issue, please let us know in the comments. We are glad to help you.
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Thank you.