Issues with using pipe ( | ) symbol in Evaluate method in lotusscript

When attempting to use @DBLookup in Evaluate using lotusscript the following attempt succeeded


Evaluate({ @DbLookup("";"";"vwDB";"userName"; 2 ) })

But, replacing the curly braces with the pipe symbol failed,
I mean the following,
Evaluate(| @DbLookup("";"";"vwDB";"userName"; 2 ) |)

I even tried introducing the document parameter,in the following fashion,
Evaluate(| @DbLookup("";"";"vwDB";"userName"; 2 ) |,contextDoc)

I tried this in 8.5.1 and I believe it must be the same with all the other versions as well.