Runtime Enable / Disable tableview column

Hi People.

I have a problem with a column of tableView in a BSP. This column is type button. I need enabled/diabled in runtime. At the begining my column is defined as cellDisabledKey = "disabled":

<htmlb:tableViewColumn columnName                  = "titulo1"

                               title               = "event_1"

                               onCellClick         = "envent_1"

                               onItemClick         = "event_1"

                               sort                = "TRUE"

                               disableFilter       = "TRUE"

                               type                = "button"

                               cellDisabledKey     = "disabled"

                               horizontalAlignment = "center" >

When another button is clicked, I have to enable my column button.

Could you tell me how I can do it? I tried with an iterator but it is not working.

thank you very much!

Regards!