[Cloud Security-S&I] RQL Operators (#1022)

* [Cloud Security-S&I] RQL Operators

* note update

* rephrased note

docs/en/enterprise-edition/content-collections/search-and-investigate/rql-operators.adoc

@@ -648,13 +648,16 @@ GSON/AWS: "Nov 7, 2016 9:34:21 AM"
 
 ISO: "2011-12-04T10:15:30+01:00"
 
-The query time ranges that are available are `_DateTime.ageInDays` , `_DateTime.ageInMonths` , `_DateTime.ageInYears` , and `_DateTime.daysBetween` . The `_DateTime.daysBetween` function looks for any information that falls in between two dates and takes two dates as arguments.
+The query time ranges that are available are `_DateTime.ageInDays` , `_DateTime.ageInMonths` , `_DateTime.ageInYears` , and `_DateTime.daysBetween` . The `_DateTime.daysBetween` function looks for any information that falls in between two dates and takes two dates as arguments. 
 
 For example, the `_DateTime.ageInDays` returns the number of days until a date as a negative number.
 
+
 [NOTE]
 ====
-When using the _DateTime function all json parameters are available as auto-complete options, you must select only parameters that have timestamps. Also, the syntax for a function does not support spaces. Remove empty spaces before or after parenthesis, and between comma-separated parameters.
+* For your query to work properly, ensure RQL json.rule functions are wrapped in single quotes (``). If single quotes are not added, the RQL will not be valid and cannot be executed.
+
+* When using the _DateTime function all json parameters are available as auto-complete options, you must select only parameters that have timestamps. The syntax for a function does not support spaces, so make sure to remove empty spaces before or after parenthesis, and also between comma-separated parameters.
 ====
 
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