#### Specifying parameters using dialog when running report sets via URL

When running reports in a report set via URL, if the reports contain parameters, you need to manually enter the parameters in the URL string without any mistakes. You may find this painful sometimes because it's not easy to remember all parameters in a report set. However, JReport provides you with the special JSP tryView.jsp, which enables to display the Enter Parameter Values dialog to manage parameters.

The display of the parameter dialog requires:

- The reports have parameters.
- The URL calls tryView.jsp.
- No parameter specified in the URL or the parameters provided in the URL fail to include all necessary parameters.

With the above three conditions fulfilled, the Enter Parameter Values dialog will be displayed right after you finish the URL in the address bar and make it run. After setting the values and clicking OK in the dialog, JReport Enterprise Server will append the values to the URL string for you and execute the URL. However, if you click Cancel in the dialog, the URL running will be cancelled.

Tip: If you want to specify parameters via dialog when running reports via URL, the most effective way to display the parameter dialog is that you do not specify parameters at all in the URL.