actionModalConfig equivalent available for expandable cells/cards?

Is there a way to pass data from a cell to a widget if this widget should be opened as expandable cell content? When using popup/popover you do that via actionModalConfig property.
I have in total 10 cells which should show 4 buttons when activating their expandable view. the content of the expandale view is the widget (which contains the four buttons)
I want to pass commands and labels as a comma separated list (100=An,70=70%,40=40%,0=Aus) from the cell to the widget

component: oh-label-cell
  label: Test
    - component: widget:cellContent
uid: cellPopup
component: oh-repeater
   ...buttons are created here depending on the comma separated list