Although most simple Windchill installations do not require them, webject parameter values must often be taken directly from user input in a web-based form or as a group of unknown size or kind from a data repository. Info*Engine provides a mechanism called “dynamic parameter value substitution” that can be used in the following situations:

The substitution required in a webject is applied once, immediately before a webject is executed. Therefore, to substitute values from a group that is created through the execution of a task, you must execute the task before you execute the webject that contains the substitution expressions. You cannot execute the task from within the webject.

You can use Info*Engine substitution expressions in data attribute values on the param tag used in any webjects.