Parameters are basically variables that holds data values and returns them when referenced from Components or calculations
However the concept of variables is extended with an optional expression/rule set that evaluates each time the parameter is referenced.
The expression can use the build in functions or it can be a SQL Select statement for accessing external databases.
The predefined set of rules can be used without coding. The expression is evaluated before the rule set.
Rules include Replace(), SubString(), Left(), Right() etc. and can be called after one another for building more advanced data manipulation than possible with a single expression.
There are 2 categories of Parameters:
- System – Returns system information: Date, Time, Desktop path etc.
- Custom – Returns an assigned value and optionally evaluates an expression/rule set.
|Supported data types|
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