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Thursday, October 18, 2007

Using the $$FilterValue function

$$FilterValue Function

Syntax :

$$FilterValue : ValueExpression : CollectionName : PositionSpecifier : FilterExpression

1) The $$FilterValue function allows you to apply a filter (FilterExpression) on a specified Collection (CollectionName), and
2) Get the first or the last Object (PositionSpecifier) of that filtered list and
3) Retrieve the value of any field/method (ValueExpression) of the first or last object as specified by PositionSpecifier.

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