Id
This property allows you to assign a unique ID to the Combo-Box control.
This is the information the variables 
event-control-id and 
control-id refer to. Both variables are defined in 
iscrt.def.
 
Example - Create a combo-box in screen section with an ID
screen section. ... 03 screen-1-co-1 Combo-Box    line 19.0    column 23.0    size 12.0 cells     lines 11.0    id 13    3-d    drop-down    .  |