numeric
The current "value" of the sub-panel. This element is numeric and will have a different meaning depending on the panel type:
button - The armed state of the button (0 or 1).
check_button - The state of the check button (0 or 1).
clock - Not applicable.
combo_box - The text interpreted as a numeric value.
dial - The current dial value.
label - Not applicable.
list - Which option is currently highlighted.
log - Not applicable.
options - Which option is currently displayed.
progress - The current progress value.
radio_box - Which option is currently selected.
sash - Not applicable.
separator - Not applicable.
slide - The current slider value.
text - The text interpreted as a numeric value.
window - Not applicable.
Changing this element will have an immediate visual effect on the panel contents.
When this element changes by user interaction, the panel element panel.changed is set to 1.