Hi @lunalovegood ,
The syntax is incorrect.
The last condition should be like below if you want to check if ComboBox2.Selected.'Keywords' is blank.
IsBlank(ComboBox2.Selected.'Keywords')
OR check this if you want 'Keywords' = ComboBox2.Selected.'Keywords'). You are missing "="
Filter(
'HEO Lesson Learn',
IsBlank(ComboBox2.Selected.Value) || IsEmpty(ComboBox2.SelectedItems) || 'Keywords' = ComboBox2.Selected.'Keywords')
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I hope this helps.
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Thanks,
ANB