Presto Development and APIs : Presto Platform API Console : Input Parameters for JUMP Requests : Parameter Values
Parameter Values
Explicit parameter values, either named or unnamed, can be any type valid in JSON:
*String = characters enclosed in double quote marks, such as "string".
*Number = numeric characters with no quote marks, such as 104.2.
*Keywords = true, false or null
*Arrays = enclosed in brackets with commas separating array entries, such as [ 10, 5, 0].
*Objects = enclosed in braces with named properties. Property names are strings and end in a colon followed by the property value. For example, { propertyA: true } or { "ns:searchType": "book" }.
Note:  
Property names that include XML namespaces must be enclosed in double quote marks to ensure that the colon for the namespace is clear.
See the http://www.json.org/json.org site for a good introduction to JSON types and syntax.
Parameter values can also be resolved by the Presto Server from a Presto attribute. The value passed in the request is a mapping expression that identifies the Presto attribute to use to resolve this input parameter. See Map Presto Attributes to Artifact Input Parameters for more information.
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