htmlb:Tableview processing and onChange event

When using the ITS server you can send and read data from the web page using a step loop. This is done using field_get and field_set commands in the ABAP code. I can't find anyway of doing this with a Tableview. Can you use a step loop with WAS and BSP.

Also I would like to put an onchange event on an input field in the table. Is this possible?

Can I disable an input field in the table depending on the value of a different field in the table? I.e. if you change the value of column 1, column 2 becomes disabled.