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The node that an XPath expression evaluates
to is being set or compared to the results of the
true
function.
The
true
function returns a value of true.
To
test for the existence of a node, use the
boolean
function.
The following route condition tests whether the node for the
stringVar
variable exists:
boolean(/process_data/@stringVar) = true()
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Ensure that you are using the
true
function
correctly. (See
true
.)
To
test the value of a boolean value, convert the value to a string.
The following example converts the boolean variable named
boolVar
to
a string, and compares it to ’true’:
string(/process_data/@boolVar)
= "true"
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