Application business logic may require a custom form to collect action input parameters from the end users.
Code On Time web applications have built-in support for modal action confirmation forms.
The screen shot of the master/detail page Suppliers shows the custom action Change Supplier selected in the context menu of the detail view.
![A master/detail page 'Suppliers' with the context menu activated in the detail data row A master/detail page 'Suppliers' with the context menu activated in the detail data row](/blog/2012/04/collecting-action-parameters-in-modal/image02.png)
A custom modal parameter form is displayed when the action is selected.
![A custom modal form allows collecting action input parameters from application end users A custom modal form allows collecting action input parameters from application end users](/blog/2012/04/collecting-action-parameters-in-modal/image04.png)