You can add root path(AF Element path) and expression like if 'AF attribute' = "No Data" then " " else 'AF attribute'.
Hi Lal Babu Shaik,
I tried exactly that earlier but got a message in cell...
"Expressions cannot use attributes with non PI Data References in Afttribute..."
Maybe because my attribute is some Table Lookup.
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PI DataLink permits the following data items in expressions:
PI AF attributes that store data references to PI points
PI AF attributes that store constant values
An example of a filter expression with AF attribute is
'\\Server\Database\Element|Manufacturer' = "ACME"
Returns true if the value of the PI AF attribute Manufacturer is ACME. You can adapt this to suit your use case.
I was tested this,
so the problem is because my referenced attribute is Table Lookup.
When I put reference to PI point attribute, works well.