Strings in FEEL are any sequence of characters delimited by double quotation marks.
Boolean values FEEL uses three-valued boolean logic, so a boolean logic expression may have values true, false, or null.
Dates literals are not supported in FEEL, but you can use the built-in date() function to construct date values
Time literals are not supported in FEEL, but you can use the built-in time() function to construct time values.
Date and time literals are not supported in FEEL, but you can use the built-in date and time() function to construct date and time values
Days and time duration literals are not supported in FEEL, but you can use the built-in duration() function to construct days and time duration values
Years and months duration literals are not supported in FEEL, but you can use the built-in duration() function to construct days and time duration values