Error changing input parameters using universe

Hi guys,

We are developing a DS (1.6) application using a universe (via IDT) and we obtain an error when we want to change the input parameters.

The universe is connected to a RFC abap function, created in R/3. This function has 2 input parameters: year and country. Also, the function returns an output table with orders to show in the application.

Then, we've created the application using a datasource connected to the universe; we've added a crosstab to show the table and a button to ask for new input parameters.

The button has a call to APPLICATION.openPromptDialog(500, 500) method in OnClick event.

After click the button, we change input parameters and press OK. Then, we get this error:

We've found we couldn't use the DS_1.loadDataSource() or DS_1.reloadData() with universe, so, anybody has some idea or workaround to solve this?

Please, any help will be appreciated.

Thanks in advance!

Andrea.