How to create a new field using eval and display it in a table?

[mdufrasne]

I am struggling to make eval work with table.
Check out the screenshot below:

I would expect this to create a field titled Event_Detail, that it would represent the length and that they would be displayed with the table command, but that is not the case here.

I'm sure I am missing something simple.

[jpolcari · Accepted solution]

Try placing the field name within quotes: len("logdata.processInfo.ProcessName")

[somesoni2]

Dot (.) is a special char in eval (for concatenation) so you would need to quote it, single and double quotes both will work.