Process variable not taking value from select widget in a multiple page form

Dear Bonita BPM community.

I have defined a process with two process data: productTypes, which has been created as a text list of options, and productType which is Text. I created a task with a two-page form. The first form has a select widget (productTypeSelect) whose values are taken from productTypes and the second form has a non-editable text field which shows the product selected in the previous form. I tried to achieve this behavior using the “output operation” in the data field of the select widget so that: productType takes value of field_productTypeSelect. However, when I select a product in the first form, the variable productType doesn’t take the corresponding value. Instead, it has a null value. What can I do to achieve the expected behavior?

Thanks in advance!!

Try to use jquery to fulfill your behavior, as the operation will not take effect until the submit bottom is clicked. This is as fare as I understand, but I am not sure.