You can dynamically parameterize a command at runtime by using the values from a Web parameter or the states of data providers or the page. You can also parameterize a Web item dynamically using the SET_ITEM_PARAMETERS command. You can use web template parameter ACTION_BEFORE_FIRST_RENDERING to do this.
You can use the path query to read the values of a parameter. You can use the values to set a filter value dynamically, to replace the description (CAPTION) of a Web item with the description of the query, or to deactivate a pushbutton, for example.
The path query for dynamic parameterization is based on the syntax for XML Path Language (XPath) Version 1.0.