UFT Pro (LeanFT) .NET SDK Reference, Version 14.03
SetCheckBoxState(UInt32,Boolean) Method
1-based.
True to select.
Selects or unselects a check box item for this node of a SAP column tree or list tree, by checkbox index.
Syntax
void SetCheckBoxState( 
   uint itemIndex,
   bool state
)

Parameters

itemIndex
1-based.
state
True to select.