License Agreement scroll to bottom issue

Hello,

My company recently changed the License Agreement document.
I copied the plain text in the field, and I want to implement one of the following scenarios:

Right now, the Next button is enabled when the Agree radio is selected.

1. Now, I would like the user to scroll all the way down to the end of the license agreement (MSGID_ONVSCROLLBOTTOM), then the Agree button to become active and also the Next button to be enabled.

Problem here: I couldn't find information on how to disable the radio button

2. Combine selection of the Agree button and the scroll to bottom event, then enable the Next button.

Problem here: I couldn't make these events work together.

Please help with any of these scenarios.

Thank you,
Cosmin